Appetites of the body which are derived from merely physical habits tend to get mixed with emotions, which are of a different and higher kind. This is particularly true of one physical appetite--sex. If a man is to know and master himself, he will need to be clear as to the difference between a sexual affection, which is emotional, and sexual desire, which is physical. This knowledge is important to all Questers.
-- Perspectives > Chapter 5: The Body > # 31