Before his mind can understand truth, attain the Real, and enjoy happiness, it must reach a quiet state. No disturbances, no agitations, and no resistances must get in the way. To make such a state possible, it must first be reached spasmodically during special periods each day, that is, during meditation periods. As it becomes more and more accustomed to the silencing of its negative activities in this way, it will eventually become more and more settled in the state by habit during the rest of the day. Finally the habit becomes a trait of character, permanent and unbroken. Here is the further reason why the practice of meditation exercises is a necessity, indispensable to a complete quest.
-- Notebooks Category 4: Elementary Meditation > Chapter 1: Preparatory > # 97