The man who is delivered from sin and freed from illusion, who is emancipated from suffering for all time because the flesh can catch him no more, has earned the right to infinite rest in the eternal Void. But he has also the power to choose otherwise. He may stop at its very threshold and renounce the reward it offers. Since the phenomenal world has nothing to offer him, the only reason for such a choice can be compassionate thought for the benighted creatures he is about to leave behind.
-- Notebooks Category 25: World-Mind in Individual Mind > Chapter 4: The Sage's Service > # 2