The student travels through the different stages on the journey to supreme truth. But without competent guidance he may fall into the error of mistaking one of the stages for the truth itself. He does not usually understand that there is a graded series of developments, each one of which looks like the truth itself, and that only after all these have been passed through can he reach the glorious culminating goal.
-- Notebooks Category 20: What Is Philosophy? > Chapter 4: Its Realization Beyond Ecstasy > # 83