There must be a limit up to which you may nourish this body which can be compared to a boat. Your life is the river. On one side of the river is this world and on the other side is the other world. You have undertaken a voyage from this world to the other world, using the body as the boat and you must take care of this body until you reach the other shore. This body must be looked upon as a boat, as a means to an end but not as an end in itself.

- Summer course, 1972.