In the first stage of progress we learn to stand aside from the world and to still our thoughts about it. This is the mystical stage. Next, we recognize the world as being but a series of ideas within the mind; this is the mentalist-metaphysical stage. Finally, we return to the world's activity without reacting mentally to its suggestions, working disinterestedly, and knowing always that all is One. This is the philosophical stage.
-- Perspectives > Chapter 20: What Is Philosophy? > # 27