The theory of taking off fat is the simplest theory in the world. It is announced, in four words: Stop eating and drinking. The practice of fat reduction is the most difficult thing in the world. Its difficulties are comprehended in two words: You cannot. The flesh is willing, but the spirit is weak. The success of the undertaking lies in the triumph of the will over the appetite. There's a lovely line of cant for you! Triumph of the will over the appetite. It sounds like the preaching of a professional food faddist, who tells the people they eat too much and then slips away and wolfs down fou.