He is to try to be aware--first at specified times and later at all times--of his inner state, of his thoughts and feelings, his motives and desires. That is, he is to watch himself. There are two forms of this exercise. In the passive one he watches without passing judgement or making comment. In the other and active one, he measures his state against the ideal state--not, however, by intellectually formed standards but by a mind-quietening waiting for intuitive feeling.
-- Notebooks Category 4: Elementary Meditation > Chapter 4: Meditative Thinking > # 148