We cannot afford to dispense with mysticism merely because we take to philosophy. Both are essential to this quest and both are vital in their respective places. The mystic's power to concentrate attention is needed throughout the study of philosophy. The philosopher's power to reason sharply is needed to give mystical reverie a content of world-understanding. And in the more advanced stages, when thinking has done its work and intellect has come to rest, we cease to be a philosopher and dwell self-absorbed in mystic trance, having taken with us the world-idea without which it would be empty. We can only afford to dispense with both mysticism and philosophy when we have perfectly done the work of both and when, amid the daily life of constant activity, we can keep unbroken the profound insight and selfless attitude which time and practice have now made natural.
-- Perspectives > Chapter 20: What Is Philosophy? > # 48