Nietzsche inveighs against every sort of historical optimism; but he energetically repudiates the ordinary pessimism, which is the result of degenerate or enfeebled instincts of decadence. He preaches with youthful enthusiasm the triumph of a tragic culture, introduced by an intrepid rising generation, in which the spirit of ancient Greece might be born again. He rejects the pessimism of Schopenhauer, for he already abhors all renunciation; but he seeks a pessimism of healthiness, one derived from strength, from exuberant power, and he believes he has found it in the Greeks.