§ 167
The inference that a wholesome erotic pattern must be provided for young people, and adopted by older married persons, is therefore irresistible.
The only way actions of any kind can be made better is by introducing into the mind a pattern according to which these actions are to be carried out. The only means for introducing this pattern into the mind of a man, if he does not already possess it, is by way of the imagination. The various visual, auditory and other images must be created in the mind of the individual before it will be physically possible for him to follow this pattern.
Mere verbal reiteration of a clumsily worded command or prohibition never provides the imaginative factor which is the essential one. Prohibitions are discussed elsewhere ([§ 197]).
Thus it appears that the imagination is the vital factor in any action just because it constitutes the pattern of the action.
It is always much better psychologically to show or describe a person doing what one desires him to do than in abstract terms, to tell him to do it.