There is a wide variability in these qualities. Of two infants one will call lustily for whatever he wants， show great glee in anticipating， great eagerness in seeking， and a high degree of satisfaction when his desire is gratified. And another will be lackadaisical in his appetite， whimsical， "hard to please" and much more difficult to keep pleased. Fatigue will strip the second child of the capacity to eat and sleep， to say nothing of his desires for social pleasures， whereas it will only dampen the zeal and eagerness of the first child. There is a hearty simple type of person who is naively eager and enthusiastic， full of desire， passion and enthusiasm， who finds joy and satisfaction in simple things， whose purposes do not grow stale or monotonous； there is a finicky type， easily displeased and dissatisfied， laying weight on trifles， easily made anhedonic， victims of any reduction in their own energy (which is on the whole low) or of any disagreeable event. True， these sensitive folk are creators of beauty and the esthetic， but also they are the victims of the malady we are here discussing.
Aside from this temperament， training plays its part. I think it a crime against childhood to make its joys complex or sophisticated. Too much adult company and adult amusements are destructive of desire and satisfaction to the child. A boy or girl whose wishes are at once gratified gets none of the pleasure of effort and misses one of the essential lessons of life.--that pleasure and satisfaction must come from the chase and not from the quarry， from the struggle and effort as well as from the goal. Montaigne， that wise skeptic， lays much homely emphasis on this， as indeed all wise men do. But too great a struggle， too desperate an effort， exhausts， and as a runner lies panting and motionless at the tape， so we all have seen men reach a desired place after untold privation and sacrifice and who then found that there seemed to be no energy， no zeal or desire， no satisfaction left for them. The too eager and enthusiastic are exposed， like all the overemotional， to great recessions， great ebbs， in the volume of their feeling and feel for a time the direst pain in all experience， the death in life of anhedonia.
After an illness， particularly influenza， when recovery has seemingly taken place， there develops a lack of energy feeling and the whole syndrome of anhedonia which lasts until the subtle damage done by the disease passes off. Half or more of the "nervousness" in the world is based on actual physical trouble， and the rest relates to temperament.
When a great purpose or desire has been built up， has drained all the enthusiasm of the individual and then suddenly becomes blocked， as in a love affair， or when a business is threatened or crashes or when beauty starts to leave，--then one sees the syndrome of anhedonia in essential purity. A great fear， or an obsessive moral struggle (as when one fights hopelessly against temptation)， has the same effect. The enthusiasm of purpose and the eagerness of appetite go at once， in certain delicate people， when pride is seriously injured or when a once established superiority is crumbled. The humiliated man is anhedonic， even if he is a philosopher.
The most striking cases are seen in men who have been swung from humdrum existence to the exciting， disagreeable life of war and then back to their former life. The former task cannot be taken up or is carried on with great effort； the zest of things has disappeared， and what was so longed for while in the service seems flat and stale， especially if it is now realized that there are far more interesting fields of effort. In a lesser degree， the romances that girls feed on unfit them for sober realities， and the expectation of marriage built up by romantic novel and theater do far more harm than good. The triangle play or story is less mischievous than the one which paints married life as an amorous glow.
One could write a volume on eagerness， enthusiasm and passion， satisfaction and dissatisfaction. Life， to be worth the living， must have its enthusiasms， must swing constantly from desire to satisfaction， or else seems void and painful. Great purposes are the surest to maintain enthusiasm， little purposes become flat.
He who hitches his wagon to a star must risk indeed， but there is a thrill to his life outweighing the joy of minor success.
To reenthuse the apathetic is an individual problem. When the lowered pressure of the energy feeling is physical in origin， then rest and exercise， massage hydrotherapy， medicines (especially the bitter tonics)， change of scene are valuable. And even where the cause is not in illness， these procedures have great value for in stimulating the organism the function of enthusiasm is recharged. But one does not neglect the value of new hopes， new interests， friendship， physical pleasure and above all a new philosophy， a philosophy based on readjustment and the nobility of struggle. Not all people can thus be reached， for in some， perhaps many cases， the loss of these desires is the beginning of mental disease， but patient effort and intelligent sympathetic understanding still work their miracles.
第一章CHAPTER XI. THE EVOLUTION OF CHARACTER WITH ESPECIAL REFERENCE TO THE GROWTH OF PURPOSE AND PERSONALITY
There have been various philosophies dealing with the purposes of man. Man seeks this or that--the eternal good， beauty， happiness， pleasure， survival--but always he is represented as a seeker. A very popular doctrine， Hedonism， now somewhat in disfavor， represents him as seeking pleasurable， affective states. The difficulty of understanding the essential nature of pleasure and pain， the fact that what is pleasure to one man is pain to another， rather discredited this as a psychological explanation.
