Plato wrote that philosophy is a kind of death. He meant that the desires and interests, the matters and activities of the outer world must be surrendered in a certain way and at certain times. This is to be done invisibly and secretly in the deepest part of the soul. It is there to become an abiding condition, a permanent attitude, a total withdrawal from what a man normally lives for: thus he dies to the world. It is also to be done differently at specially reserved times by the process of extremely deep meditation. Consciousness is reversed from things and thoughts to its own pure Self.
-- Notebooks Category 20: What Is Philosophy? > Chapter 1: Toward Defining Philosophy > # 109