Because the quest is in part an attempt to raise himself to a higher level of being, he must change his attitude for a time towards those powers of the lower level which would keep him captive there. That is, he must liberate himself from the thraldom of the senses and the tendencies of the intellect. The first he may accomplish by ascetic disciplines, the second by meditative disciplines. The body must be mortified, the emotions purified, and the mind reoriented. He has, in short, to pursue the good with all the ardour and faithfulness that the world reserves for its lesser loves.
-- Notebooks Category 2: Overview of Practicies Involved > Chapter 5: Balance the Psyche > # 15