Perhaps the most important single text that traditionally outlines the Jnana Marga (Path of Knowledge) is Shankara’s Vivekachudamani. This text has been used for centuries as a step by step manual to take one from (apparent) ignorance to Moksha (liberation) in which there is no suffering and it has been recommended by all the great Advaita sages including Sri Ramana Maharshi.
There are many gems littered throughout the text, and here is one of them which you may have missed:
160. The stupid man thinks he is the body, the book-learned man identifies himself with the mixture of body and soul, while the sage possessed of realisation due to discrimination looks upon the eternal Atman as his Self, and thinks, “I am Brahman”.
In verse 160 Shankara tells us that the one who is book-learned in Vedanta considers himself to be a mix of ‘body and soul’. In doing so, the one with mere book-learning still retains identification with the body, and so remains in ignorance and continues to suffer. In verse 162 Shankara, as is characteristic of the writing in Vivekachudamani, repeats his point and elaborates on it to make the meaning clear and beyond doubt:
162. As long as the book-learned man does not give up his mistaken identification with the body, organs, etc., which are unreal, there is no talk of emancipation for him, even if he be ever so erudite in the Vedanta philosophy.
There are many who know the scriptures, know the teachings, but still identify with the body in some way. These verses are a warning against this view. Shankara concludes this small section as follows, dispensing his sagely advice:
163. Just as thou dost not identify thyself with the shadow-body, the image-body, the dream-body, or the body thou hast in the imaginations of thy heart, cease thou to do likewise with the living body also.
164. Identifications with the body alone is the root that produces the misery of birth etc, of people who are attached to the unreal; therefore destroy thou this with the utmost care. When this identification caused by the mind is given up, there is no more chance for rebirth [ie. liberation is attained].
So don’t take yourself to be the body, just as you do not take your shadow to be yourself, do not take your body to be your-Self. Also, do not take yourself to be both the body and something else and in doing so retain a sense of limitation. You are That alone, you are the Self.