Oxford Classics Marion Faber translation:
When we are young, we revere and revile without benefit of the art of the nuance, life’s greatest prize; and it is only fair that we must later repent bitterly for having pounced upon people and things with a Yes or a No. Everything is designed so that the worst of all possible tastes, our taste for the unconditional, is terribly and foolishly abused, until we learn to put some art into our feelings and even take a chance with artifice—as do the real artists of life. Young people with their characteristic anger and awe, seem to find no peace until they have neatly falsified people and things so that they can vent their feelings on them: youth by its very nature is something falsifying and deceptive. Later, after our young soul has been tormented by unrelieved disappointments and finally turns suspiciously back upon itself, still hot and wild even in its suspicion and pangs of conscience, then how angry we are, how impatiently we tear ourselves apart, taking vengeance for having deluded ourselves for so long as if our delusion had been voluntary! When we make this transition, we punish ourselves by distrusting our feelings; we torture our enthusiasm with doubt, indeed we even experience our good conscience as a danger, as if it were veiling us on principle, take sides against ‘youth’.
A decade later, and we understand that this whole process, too, was—youth!
-Nietzsche, Beyond Good and Evil, Aphorism 31