Zen: sudden vs gradual enlightenment

yuanwu letters

In his letters, Yaunwu write some of the most the nuanced of zen/chan teachings we have. Regarding realisation, he writes about its sudden nature:

Without setting up stages, they abruptly transcend to realize this essence alone.  Since before the time when nothing existed, this essence has been ever still and unmoved, determining the basis of all conscious beings.  It permeates all times and is beyond all thought.  It is beyond holy and ordinary and transcends all knowledge and views.  It has never fluctuated or wavered:  it is there, pure and naked and full of life.  All beings, both animate and inanimate, have it complete within them.

However, Yuanwu also writes about a gradual process, a gradual path:

In general, genuine Zen teachers set forth their teachings only after observing their learners’ situation and potential. Real teachers smelt and refine their students hundreds and thousands of times. Whenever the learner has any biased attachments or feelings of doubt, the teacher resolves them and breaks through them and causes the learner to penetrate through to the depths and let go of everything, so that the learner can realize equanimity and peace while in action. Real teachers transform learners so that they reach the stage where one cannot be broken, like a leather bag that can withstand any impact.

Only after this does the Zen teacher let the transformed student go forth to deal with people and help them. This is no small matter. If the student is incomplete in any respect, then the model is not right, and the unripe student comes out all uneven and full of excesses and deficiencies, and appears ridiculous to real adepts.

Yuanwu then goes on to describe the training required to be a zen teacher:

Therefore, in order to teach the Dharma, the ancient worthies worked for completeness and correctness, and clarity in all facets. This means inwardly having one’s own practice as pure as ice and jade, and outwardly having a complete and well-rounded mastery of techniques, a perspicacious view of all concious beings and skill in interchange.

When such adepts met with potential learners, they examined each and every point in terms of the Fundamental. When the learners finally did understand, then the teachers employed techniques to polish and refine them. It was like tranferring the water from one vessel into another vessel, with the utmost care not to spill a drop.

Here, in another letter Yuanwu also writes of the refining process required before someone can teach zen:

Ever since ancient times, it is only those who are able to bear the repsonsibility of being a vessel of the Great Dharma who have been able to undertake the role of a Zen teacher and stand like a wall a mile high. These people have been tempered and refined in the blast furnace of the teachers of the Source, taking shape under the impact of their hammers and tongs, until they become real and true from beginning to end. Otherwise, they do not appear in the world as teachers. If they do appear, they are sure to startle the crowd and move the people. Because their own realization and acceptance of the responsibility of communicating Truth was not hasty and haphazard, when they passed it on to others they were not rushed or careless.

We all know the classic examples. Mater Rang staying with the Sixth Patriarcdh at Caoqi for eight years. Mazu at Guanyin Temple. Deshan and Longtan. Yangshan and Guishan. Linji and Huangbo. In every case it took at least ten or twenty years of close association between teacher and pupil before the pupil was fully prepared to become a teacher himself.

That is why, with the genuine Zen teachers, every word and every phrase, every act and every state resonated with the music of gold and jade.

Virtually no one in the latter generations has been able to see into what they were doing. You will only be able to see where they were really at when you achieve transcendental realization and reach the stage that all the enlightened ones share in common.

I recall this story from olden times. Mazu asked Xitang, “Have you ever read the scriptural teachings?” Xitang said, “Are the scriptual teachings any different?” Mazu asked, “If you haven’t read the scriptures, how will you be able to explain for people in various ways?” Xitang said, “I must care for my own sickness – how could I dare try to help other people?” Mazu said, “In your later years, you are sure to rise to greatness in the world.” And that’s the way it turned out later.

Hopefully you will see how, whilst an initial breakthrough or realision is to all intensive purposes instantaneous, the rooting out of ignorance takes time, it takes time for the mind to become purified by that realisation and to fully manifest the heart of enlightenment. Yuanwu talks about this more explicitly here. I have written two articles here about the relationship between the gradual and sudden paths here and here.

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Zen master Hui-Hai: Right View and the Buddha-Eye

buddha head

Let us allow the gentle wisdom of Hui-Hai to clearly unfold the Buddha Dharma to us:

Question: What is the right view?

Zen master Hui-Hai: To perceive without perceiving any object whatsoever is the right view.

Question: What does “to perceive without perceiving any object whatsoever” mean?

Hui-Hai: Perceiving all sorts of things without grasping — that is, not being clouded by the arising of any thought of love or hate, etc. — is perceiving without any objects. If one can see without seeing any object whatsoever, that is using the Buddha-Eye, which is like no other eye.

On the other hand, if one sees all sorts of things that cause thoughts of love and hate, etc., to arise, that is known as “perceiving objects” with ordinary eyes, and sentient beings have no other kind of eyes. This is true, likewise, with all of the other sense organs.

Zen Master Hui-Hai: words are useless

the-best-spiritual-teachings-self-destruct

I thought I’d share another one of  Hui-Hai’s insights. He’s an expert in explaining Buddhist doctrines to Buddhist seekers. Here Hui-Hai shows us the provisional utility of words, and also points out their essential voidness. There is no contradiction in this.

Questioner: What does it mean when the sutra says: “The sound of discussion has ceased, and the role of thought is done”?

Zen Master Hui-Hai: Words are used to manifest the doctrine. After understanding the doctrine, then, words are useless. The doctrine is void, voidness is the Tao, and the Tao is without words. This is the meaning of “The sound of discussion has ceased”.

Since the real meaning of the doctrine does not give rise to a single thought or perception and because no thought or perception arises, it is unborn. Furthermore, because it is unborn, then the fundamental nature of all forms is void.

Next, since the fundamental nature of all forms is void, then everything in the world is non-existent.

Finally, since all things are fundamentally non-existent, “the role of thought is done”.

Words are used to manifest the doctrine. After understanding the doctrine, then, words are useless.

Also see How spiritual teachings work

Is there anything you can do to become enlightened?

meditation moon prayer

Q. Hi Tom. Thanks for your blogs posts. Ever since I stumbled across your site I’ve been trawling through your writings and videos and found them to be quite insightful. I wanted to ask if you think there is anything you can do to become enlightened? I’ve heard it said that there is nothing you can do, it either happens or it doesn’t, but that feels kinda hopeless to me. I know hope is not the arbiter of truth but I’d like to know what you think.

Tom: Hi _____. It’s a tough one to answer as depending on how you look at it, you could either say there is nothing you can do, because there is no ‘I’, and whatever happens will happen, which is true. Similarly all seeking implies the existence of ignorance, and all paths are for the ego and so can serve to reinforce the sense of ‘I’ or ‘me’.

But you can also talk on the level of the apparent seeker and give teachings that apparently help the apparent seeker realise that there is no separate seeker at all. The essence of these teachings is to relax, still thoughts and look, and then it can be more easily seen that the ‘me’ is an illusion, and that it always was an illusion, and then it is obvious that all paths are also a part of this grand illusion too, although they seemed apparently useful at the time.

Even when this is seen, the habitual force of ignorance can be so strong that it keeps on reasserting its hold and so a post-realisation practice or sadhana can be practiced, either formally, or often it naturally happens by itself over time.

So in summary I tend to do both, sometimes radically pointing out there is no ‘separate me’, other times meeting the apparent seeker where they are, depending on whom I’m taking to and where they are at with respect to the teachings. This tends not to be something I deliberate much over, but it’s just how the interaction tends to manifest itself when I am talking with someone seeking.

Here’s a more straightforward response I gave someone else to this question:

https://tomdas.com/2018/01/15/is-there-anything-i-can-do-to-become-enlightened/

Q. If truth is always present and available, what prevents someone from seeing it?

veil maya illusion sari hindu india

Q. If truth is always present and available, what prevents someone from seeing it?

Tom: Pre-occupation with and belief in the content of thought.

Q. How can I drop all this activity and take that leap of faith?

Tom: Ignore your thoughts.

Q. How long should I ignore my thoughts for? What if I do it for a few days and nothing has happened?

Tom: This is also a thought.

Q. Is it possible to live whilst ignoring thoughts in a modern urban lifestyle?

Tom: Yes. The body-mind will take care of itself. Notice how thought is trying to prevent you from ignoring it, how it is throwing up various fears. Ignore all this.

Q. Thank you so much for holding me when I feel like collapsing 🙏

Tom: It’s my pleasure, I am humbled by your gratitude. Best wishes to you 🙏

 

Also see Nisargadatta Maharaj: Ignore your thoughts

 

Zen Master Hui Hai: does the Absolute ever change?

dazhu_huihai

It’s all too common for seekers of enlightenment to fall into conceptual traps. Rather than using beliefs to free themselves from beliefs all together, the verbal teachings are instead often clung to, like a drowning man clutching at a straw.

One concept that can be useful along the way is that of the Absolute, but like all concepts it is also a potential trap, in that we can fall into believing in the Absolute without any real experience, or worse, only a partial experience that gives us the false impression we actually know something when we in fact do not.

In this following passage we see Ch’an Master Hui Hai in dialogue with a Tripitaka master, (The Tripitaka are the traditional written scriptures of Buddhism). Deliberately Hui Hai gives the ‘wrong’ non-traditional answer initially in order to free the questioner from fixed views and show that the Teaching (Dharma) can be expressed in a myriad of ways.

At the end  of the dialogue the Tripitaka master expresses his respect and amazement at how the Southern school – the ‘Zen’ school of sudden enlightenment of which Hui Hai is part – is truly unfathomable:

Once a Tripitaka Master asked: “Does the Bhutatathata (Absolute Reality) ever change?”
The Master [Hui Hai] replied: “Yes, it does change.”
The Tripitaka Master retorted: “You, Venerable Ch’an Master, are wrong!”
The Master then asked the Tripitaka Master: “Does the Bhutatathata exist or not?”
The Tripitaka Master answered: “Yes, the Bhutatathata does exist.”
The Master replied: “So if you say it does not change, then you are just an ordinary, worldly monk. Doubtlessly, by now you must have heard that the lowest vices can be changed into the highest virtues, the three poisons into the three cumulative disciplines, the six consciousnesses into the six supernatural powers, all the defilements into Bodhi, and the most abysmal ignorance into the highest wisdom. Thus, if you say that the Bhutatathata does not change, then you, a Tripitaka Master, are really a heterodox-sect follower. [ie. a heretic]”
The Tripitaka Master responded: “If you put it that way, then I have to admit that the Bhutatathata does change.”
The Master retorted: “But if you, indeed, hold that the Bhutatathata does change, that is also a heterodox view.”
The Tripitaka Master asked: “Ch’an Master, you just said that the Bhutatathata does change, but now you say it does not change. How can that be?”
The Master responded: “If one sees his own nature clearly – which, like Mani-Jewels, can manifest itself in different colors – then he is correct in saying that the Bhutatathata both changes and does not change. In contrast, however, if one has not seen his own nature, he will, on hearing that the Bhutatathata changes, grasp at the idea of mutability. Also, oppositely, he will, on hearing that the Bhutatathata does not change, grasp at the idea of immutability.”
The Tripitaka Master concluded: “Now I really understand what is meant when it is said that the Southern Ch’an Sect is truly unfathomable!”

This last answer of Hui Hai is particularly instructive – he essentially states that the Truth expresses itself in different ways, just like jewels can be of various colours. If one has intuitively seen this Truth, then one can correctly express this truth, even with seemingly opposed verbal statements, as these statements are coming from a ‘place of Truth’. However, for one who has not seen, the verbal statements are always incorrect, even when they are ‘officially correct’, as the essential insight is not present, and the statements are not expressions of Truth but expressions of the ignorant ego-mind.

These ego/ignorance-ridden statements are not liberating – they are simply a clinging to an empty doctrine. These insight-less statements merely give strength to the false-ego that thinks it knows something, strengthening and perpetuating the ego/sense of separation of both the one speaking and anyone listening.

(Note that I use the word ego here as a synonym for ignorance, the false belief in separation or the false belief in a separate entity that authors thoughts and actions)

 

Hsin Hsin Ming or Trust in Mind Sutra

The following is a translation of a poem attributed to Seng-ts’an, the Third Ch’an (zen) Patriarch. I could write more about it, but all I will say is that it is truly sublime and one of my favourites.

This version of the text has been translated by Richard B. Clarke

Enjoy

Hsin Hsin Ming or Trust in Mind Sutra

zen oxherding
Oxherding picture number 2: noticing the footprints

 

The Great Way is not difficult
for those who have no preferences.
When love and hate are both absent
everything becomes clear and undisguised.
Make the smallest distinction, however,
and heaven and earth are set infinitely apart.

If you wish to see the truth
then hold no opinions for or against anything.
To set up what you like against what you dislike
is the disease of the mind.

When the deep meaning of things is not understood
the mind’s essential peace is disturbed to no avail.

The Way is perfect like vast space
where nothing is lacking and nothing is in excess.
Indeed, it is due to our choosing to accept or reject
that we do not see the true nature of things.
Be serene in the oneness of things
and such erroneous views will disappear by themselves.

When you try to stop activity to achieve passivity
your very effort fills you with activity.
As long as you remain in one extreme or the other,
you will never know Oneness.

Those who do not live in the single Way
fail in both activity and passivity, assertion and denial.
To deny the reality of things is to miss their reality;
to assert the emptiness of things is to miss their reality.

The more you talk and think about it,
the further astray you wander from the truth.
Stop talking and thinking
and there is nothing you will not be able to know.

To return to the root is to find the meaning,
but to pursue appearances is to miss the source.
At the moment of inner enlightenment,
there is a going beyond appearance and emptiness.
The changes that appear to occur in the empty world
we call real only because of our ignorance.
Do not search for the truth; only cease to cherish opinions.

Do not remain in the dualistic state; avoid such pursuits carefully.
If there is even a trace of this and that, of right and wrong,
the Mind-essence will be lost in confusion.
Although all dualities come from the One,
do not be attached even to this One.

When the mind exists undisturbed in the Way,
nothing in the world can offend,
and when a thing can no longer offend,
it ceases to exist in the old way.

When no discriminating thoughts arise,
the old mind ceases to exist.
When thought objects vanish, the thinking-subject vanishes,
and when the mind vanishes, objects vanish.

Things are objects because there is a subject or mind;
and the mind is a subject because there are objects.
Understand the relativity of these two
and the basic reality: the unity of emptiness.
In this Emptiness the two are indistinguishable
and each contains in itself the whole world.
If you do not discriminate between coarse and fine
you will not be tempted to prejudice and opinion.

To live in the Great Way
is neither easy nor difficult.
But those with limited views
are fearful and irresolute;
the faster they hurry, the slower they go.

Clinging cannot be limited;
even to be attached to the idea of enlightenment is to go astray.
Just let things be in their own way
and there will be neither coming nor going.

Obey the nature of things
and you will walk freely and undisturbed.
When thought is in bondage the truth is hidden,
for everything is murky and unclear.
The burdensome practice of judging
brings annoyance and weariness.
What benefit can be derived
from distinctions and separations?

If you wish to move in the One Way
do not dislike even the world of senses and ideas.
Indeed, to accept them fully
is identical with true Enlightenment.

The wise man strives to no goals
but the foolish man fetters himself.
There is one Dharma, not many;
distinctions arise from the clinging needs of the ignorant.
To seek Mind with discriminating mind
is the greatest of all mistakes.

Rest and unrest derive from illusion;
with enlightenment there is no liking and disliking.
All dualities come from ignorant inference.
They are like dreams of flowers in air: foolish to try to grasp them.
Gain and loss, right and wrong;
such thoughts must finally be abolished at once.

If the eye never sleeps,
all dreams will naturally cease.
If the mind makes no discriminations,
the ten thousand things are as they are, of single essence.

To understand the mystery of this One-essence
is to be released from all entanglements.
When all things are seen equally
the timeless Self-essence is reached.
No comparisons or analogies are possible
in this causeless, relationless state.
Consider motion in stillness
and stillness in motion;
both movement and stillness disappear.
When such dualities cease to exist
Oneness itself cannot exist.
To this ultimate finality
no law or description applies.

For the unified mind in accord with the Way
all self-centered striving ceases.
Doubts and irresolutions vanish
and life in true faith is possible.

With a single stroke we are freed from bondage;
nothing clings to us and we hold to nothing.
All is empty, clear, self-illuminating,
with no exertion of the mind’s power.
Here thought, feeling, knowledge, and imagination are of no value.
In this world of Suchness
there is neither self nor other-than-self.

To come directly into harmony with this reality
just simply say when doubt arises, “Not two.”
In this “not two” nothing is separate,
nothing is excluded.
No matter when or where,
enlightenment means entering this truth.
And this truth is beyond extension or diminution in time or space;
in it a single thought is ten thousand years.

Emptiness here, Emptiness there,
but the infinite universe stands always before your eyes.

Infinitely large and infinitely small;
no difference, for definitions have vanished
and no boundaries are seen.
So too with Being and non-Being.
Waste no time in doubts and arguments
that have nothing to do with this.

One thing, all things;
move among and intermingle,
without distinction.
To live in this realization
is to be without anxiety about nonperfection.
To live in this faith is the road to nonduality,
because the nondual is one with the trusting mind.

Words!
The Way is beyond language,
for in it there is no yesterday, no tomorrow, no today.

Zen story: Is that so?

hakuin zen master
A scroll caligraphy by Zen master Hakuin. It reads ‘Direct pointing at the Mind/Heart, sudden realisation, becoming Buddha’ (Jikishi ninshin, Kensho jobutsu)

Here is another beautiful zen story, taken from the book ‘Zen Flesh, Zen Bones’ (compiled by Paul Reps). It melts me with its poignant loving kindness, and also manages to stop me in my tracks with the unconventional act of letting go when the time is right.

What do you think of it?

Here is the story:

 

The Zen master Hakuin was praised by his neighbours as one living a pure life.

A beautiful Japanese girl whose parents owned a food store lived near him. Suddenly, without any warning, her parents discovered she was with child.

This made her parents angry. She would not confess who the man was, but after much harassment at last named Hakuin.

In great anger the parent went to the master. “Is that so?” was all he would say.

After the child was born it was brought to Hakuin. By this time he had lost his reputation, which did not trouble him, but he took very good care of the child. He obtained milk from his neighbours and everything else he needed.

A year later the girl-mother could stand it no longer. She told her parents the truth – the real father of the child was a young man who worked in the fishmarket.

The mother and father of the girl at once went to Hakuin to ask forgiveness, to apologize at length, and to get the child back.

Hakuin was willing. In yielding the child, all he said was: “Is that so?”

The fire of suffering

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Believing the narrative of ‘me’,

Buying into this notion of self,

Projecting this notion of self onto another,

Indulging in the 3 judgements of pride, praise and blame,

We pile log upon log upon log,

Onto the fire of suffering.

Zen (Ch’an) Master Yuanwu: The Sure Way to Enlightenment, The Way of Zen

zen letters yuanwu koan

The following is a letter written almost 1000 years ago by the great Chinese master Yuanwu  (1063-1135). Yuanwu is perhaps best known for compiling the Blue Cliff Record, a classic zen text which comprises a collection of stories and sayings famous for their ability to arouse enlightenment in those who pondered them, together with advice on how to best approach them.

In Yuanwu’s letters, he reveals precise instructions in the ways of Zen that are written with a heartfelt tenderness for his student. This letter is taken from a compilation called ‘Zen Letters’ (translated by JC Cleary and Thomas Cleary). The letters in this compilation are all written by Yuanwu, and they cover a variety of subjects including how to teach and how to appoint a successor, but in this letter we find a clear and thorough overview of the path, perhaps the clearest within the entire compilation, with a focus on how to actually attain enlightenment: a description of the fundamental ground, how to approach it, how to realise it, and how to practice thereafter.

I hope the reader doesn’t mind that I have taken the liberty of interspersing my comments in italicised red and I have also bolded some lines for emphasis. Yuanwu starts by introducing the reader to the ‘fundamental ground’ that is inherent in each and every one of us. Here starts the letter:


Fundamentally, this great light is there with each and every person right where they stand – empty clear through, spiritually aware, all-pervasive, it is called the scenery of the fundamental ground.

He then describes the characteristics of this ‘ground’, stating that it is the basis of everything including the body and perceived world, but that it remains untouched and still nonetheless:

Sentient beings and buddhas are both inherently equipped with it. It is perfectly fluid and boundless, fusing everything within it. It is within your own heart and is the basis of your physical body and of the five clusters of form, sensation, conception, motivational synthesis, and consciousness. It has never been defiled or stained, and its fundamental nature is still and silent.

Then Yuanwu describes how realisation is obscured (ie. the nature of ignorance, avidya) , first through false thoughts or conceptual beliefs, and then how this conceptualisation leads to grasping which in turn leads to suffering or ‘the toils of birth and death’.

False thoughts suddenly arise and cover it over and block it off and confine it within the six sense faculties and sense objects. Sense faculties and sense objects are paired off, and you get stuck and begin clinging and getting attached. You grasp at all the various objects and scenes, and produce all sorts of false thoughts, and sink down into the toils of birth and death, unable to gain liberation.

In order to disillusion you of any fantastical and fanciful notions of enlightenment, in his compassion Yuanwu informs us that all Buddhas merely woke up to this essence (here called ‘fundamental basis’), that very essence that is within us all, and therefore Buddhahood is within all our reaches:

All the buddhas and ancestral teachers awakened to this true source and penetrated clear through to the fundamental basis. They took pity on all the sentient beings sunk in the cycle of birth and death and were inspired by great compassion, so they appeared in the world precisely for this reason. It was also for this reason that Bodhidharma came from the West with the special practice outside of doctrine.

Next, how to ‘clearly awaken’ to this fundamental ground/essence/basis/mind:

The most important thing is for people of great faculties and sharp wisdom to turn the light of mind around and shine back and clearly awaken to this mind before a single thought is born. This mind can produce all world-transcending and worldly phenomena. When it is forever stamped with enlightenment, your inner heart is independent and transcendent and brimming over with life. As soon as you rouse your conditioned mind and set errant thoughts moving, then you have obscured this fundamental clarity.

Before a single thought is born, that essence is already here, shining, untouched, unscathed, and in this way it is ‘independent and transcendent’. Therefore still your mind, quieten your mind, and see.
This essence is also not apart from life, so here Yuanwu describes it as ‘brimming over with life’. This essence is the basis of all perceived worldly phenomena. However, he warns that by buying into and believing in mental concepts (‘rousing your conditioned mind’), we have already made the cardinal mistake, entered into the world of suffering, and seemingly obscured that which cannot be obscured.

If you want to pass through easily and directly right now, just let your body and mind become thoroughly empty, so it is vacant and silent yet aware and luminous. Inwardly, forget all your conceptions of self, and outwardly, cut off all sensory defilements. When inside and outside are clear all the way through, there is just one true reality. Then eyes, ears, nose, tongue, body, and conceptual mind, form, sound, smell, flavor, touch, and conceptualized phenomena – all of these are established based on that one reality. This one reality stands free of and transcends all the myriad entangling phenomena. The myriad phenomena have never had any fixed characteristics – they are all transformations based on this light.

The method is to let everything go, let go of body and mind, forget everything so the mind is ’empty and vacant and silent’. However we are not to fall asleep. The mind should remain awake, ‘aware and luminous’.
To elaborate and be more specific, we are instructed inwardly to ‘forget all conceptions of self’. This is to remove the basic error of belief in separation. We are to forget about the distinction between ‘I’ and ‘not-I’, or between ‘me’ and ‘the world’, both of which depend on a concept of self.
Outwardly we are instructed to ‘cut off all sensory defilements’, which essentially means the compulsive or ego-driven desires which Yuanwu will touch upon later in this letter. These sensory defilements are themselves contingent on ‘conceptions of self’, but it is important to cut these off too as due to force of habit they may persist even when the illusory separation is seen through. Hence the need for practice.
Yuanwu now beautifully describes the fruit of this practice and in having faith in what is realised:

If you can trust in this oneness, then with one comprehended, and with one illuminated, all are illuminated. Then in whatever you do, it can all be the indestructible true essence of great liberation from top to bottom.

Thus far Yuanwu has instructed the reader how to realise the all-pervading yet unchanging essence, and also to realise that perceived life is non-separate from this essence. Now he goes further to explain what we should do once this essential mind has been realised.
Note that so far he has used the words ‘fundamental ground’, ‘fundamental basis’, ‘mind’, ‘inner heart’, ‘true reality’, ‘oneness’, and ‘essence’ all as synonyms to beautifully point to that-which-has-no-name. Here, in the next passage he refers to it as ‘mind’:

You must awaken to this mind first, and afterward cultivate all forms of good. Haven’t you seen this story? The renowned poet Bo Juyi asked the Bird’s Nest Monk, “What is the Way?” The Bird’s Nest Monk said “Don’t do any evils, do all forms of good.” Bo Juyi said “Even a three-year-old could say this.” The Bird’s Nest Monk said, “Though a three-year-old might be able to say it, an eighty-year-old might not be able to carry it out.”

This is a classic teaching of insight first, followed by cultivation or purification. Realisation of the fundamental essence which remains untouched is good as a start, but without purifying the mind or ‘cultivating goodness’, the enlightenment is not complete. The age-old habitual afflictions may otherwise continue. At worst they can wrestle away the realisation resulting in a ‘I got it! I lost it’ syndrome where the seeker goes back and forth wondering why their realisation of yesterday is not firm and secure, and at best the afflictions continue and this causes suffering and discomfort in the relative phenomenal world, both to the seeker and those around him/her.
Purification or ‘cultivation of all forms of good’ can occur prior to and/or after realisation of the fundamental essence (a part of the insight teachings, as I teach them), but can only gain deeper fruition post-realisation when the illusion of separation is starting to be seen through.
Yuanwu continues:

Thus we must search out our faults and cultivate practice; this is like the eyes and the feet depending on each other. If you are able to refrain from doing any evil and refine your practice of the many forms of good, even if you only uphold the elementary forms of discipline and virtue, you will be able to avoid sinking down to the of animals, hungry ghosts and hell-beings. This is even more the case if you first awaken to the indestructible essence of the wondrous, illuminated true mind and after that cultivate practice to the best of your ability and carry out all forms of virtuous conduct.

Yuanwu reiterates the same point again, stating that we should actively find our faults and seek to remedy them. This is the case prior to awakening-to-essence, but even more effective once awakening has occurred.

Let no one be deluded about cause and effect. You must realize that the causal basis of the hells and the heavens is all formed by your own inherent mind.

Here Yuanwu is talking about karma, or cause and effect, stating that it is nothing but our own minds and our afflictions (or lack of them) that will create our future ‘hells and heavens’.
Next Yuanwu goes into more details on how to cultivate this good, or how to purify the mind:

You must keep this mind balanced and in equanimity, without deluded ideas of self and others, without arbitrary loves and hates, without grasping and rejecting, without notions of gain and loss. Go on gradually nurturing this for a long time, perhaps twenty or thirty years. Whether you encounter favorable or adverse conditions, do not retreat or regress—then when you come to the juncture between life and death [the last moment of your life], you will naturally be set free and not be afraid. As the saying goes “Truth requires sudden awakening, but the phenomenal level calls for gradual cultivation”.

This instruction is similar to Krishna’s injunction to Arjuna in Chapter 2 of the Bhagavad Gita when he states that ‘yoga is evenness of mind’. Yuanwu reiterates the importance of being equanimous and again not to engage in concepts of self (and others), and the outward manifestation of this as love/hate, grasping/rejecting, loss/gain.
Whilst awakening to the essence is sudden, changes on the phenomenal level take time. Therefore ‘go on nurturing this for a long time’.
This last line, which I have bolded, is one of my favourites. Yuanwu nicely captures in words something I have often struggled to articulate: ‘Truth requires sudden awakening, but the phenomenal level calls for gradual cultivation’. Beautiful!. 
Next Yuanwu goes on to warn against an intellectual egoic approach that he sees all too commonly. In his other letters he also warns against an overly sentimental or emotional approach too, and recommends ‘forgetting thoughts and feelings and finding independent realisation’ (Letter entitled Leaping out of the Pit, p. 78). Again, the solution is to remain inwardly quiet in mind and not to just dabble in conceptual understanding:

I often see those who are trying to study Buddhism just use their worldly intelligence to sift among the verbal teachings of the buddhas and ancestral teachers, trying to pick out especially wondrous sayings to use as conversation pieces to display their ability and understanding. This is not the correct view of the matter. You must abandon your worldly mentality and sit quietly with mind silent. Forget entangling causes and investigate with your whole being. When you are thoroughly clear then whatever you bring forth from your own inexhaustible treasury of priceless jewels is sure to be genuine and real.

Next is a summary: awaken to essence, then cultivate good: arouse compassion, have no (inward) concept of self/others, remove (outward) attachments. Then wisdom will manifest.

So first you must awaken to the Fundamental and clearly see the true essence where mind equals Buddha. Detach from all false entanglements and become free and clean. After that, respectfully practice all forms of good, and arouse great compassion to bring benefits to all sentient beings. In all that you do, be even and balanced and attuned to the inherent equality of all things – be selfless and have no attachments. When wondrous wisdom manifests itself and you penetrate through to the basic essence, all your deeds will be wonder-working. Thus it is said, ‘Just manage to accept the truth – you won’t be deceived.”

Implicit in this is that ‘wondrous wisdom’ has not yet manifested when the Fundamental Essence has been realised. The ‘wondrous wisdom’ requires both realisation of the Fundamental essence (what in my teachings I call insight) together with a removal of all that is not good (what I call purification in the way I teach).

Make enlightenment your standard, and don’t feel bad if it is slow in coming. Take care!

Here ends this wonderful letter from Yuanwu!
He reminds the student not to desire anything less than full and complete enlightenment. Yes, it may take time, but do not be disheartened and get to work now!
My gratitude to Yuanwu, his student, the translators who made the reading of this text in English possible, and to all other beings and objects that contributed towards this wonderful expression. I hope you have found it, and my commentary, of benefit.
Wishing you peace.