Ramana Maharshi rarely left Arunachala for over 50 years and did not seek crowds of people to teach. One time someone asked him:
Question: Why does not Bhagavan [Ramana Maharshi] go about and preach the Truth to the people at large?
Ramana Maharshi: How do you know I am not doing it?*
Another time Ramana was asked:
Question: How can silence be so powerful?
Ramana Maharshi: A realised one sends out waves of spiritual influence, which draw many people towards him. Yet he may sit in a cave and maintain complete silence. We may listen to lectures upon truth and come away with hardly any grasp of the subject, but to come into contact with a realised one, though he speaks nothing, will give much more grasp of the subject. He never needs to go out among the public. If necessary he can use others as instruments.**
*quote taken from Maharshi’s gospel
**quote taken from Conscious Immortality