[From Nietzsche's introduction to a 1886 edition of the book first published in 1871]
. . . At any rate here a strange voice spoke (curious people understood that, as did those who found it distasteful), the disciple of an as yet unknown God, who momentarily hid himself under the hood of a learned man, under the gravity and dialectical solemnity of the German man, even under the bad manners of the followers of Wagner. Here was a spirit with alien, even nameless, needs, a memory crammed with questions, experiences, secret places, beside which the name Dionysus was written like a question mark. Here spoke (so people told themselves suspiciously) something like a mystic and an almost maenad-like soul, which stammered with difficulty and arbitrarily, as if talking a foreign language, almost uncertain whether it wanted to communicate something or remain silent. This "new soul" should have sung, not spoken! What a shame that I did not dare to utter as a poet what I had to say at that time. Perhaps I might have been able to do that! Or at least as a philologist—even today in this area almost everything is still there for philologists to discover and dig up, above all the issue that there is a problem right here and that the Greeks will continue remain, as before, entirely unknown and unknowable as long as we have no answer to the question, "What is the Dionysian?"
Indeed, what is the Dionysian? This book offers an answer to that question: a "knowledgeable person" speaks there, the initiate and disciple of his own god. Perhaps I would now speak with more care and less eloquently about such a difficult psychological question as the origin of tragedy among the Greeks. A basic issue is the relationship of the Greeks to pain, the degree of their sensitivity. Did this relationship remain constant? Or did it turn itself around? That question whether their constantly strong desire for beauty, feasts, festivities, and new cults arose out of some lack, deprivation, melancholy, or pain. If we assume that this desire for the beautiful and the good might be quite true—and Pericles, or, rather, Thucydides, in the great Funeral Oration gives us to understand that it is—where must that contradictory desire stem from, which appears earlier than the desire for beauty, namely, the desire for the ugly or the good strong willing of the ancient Hellenes for pessimism, for tragic myth, for pictures of everything fearful, angry, enigmatic, destructive, and fateful as the basis of existence? Where must tragedy come from? Perhaps out of desire, out of power, out of overflowing health, out of overwhelming fullness of life?
And psychologically speaking, what then is the meaning of that madness out of which tragic as well as comic art grew, the Dionysian madness? What? Is madness perhaps not necessarily the symptom of degradation, collapse, cultural decadence? Is there perhaps (a question for doctors who treat madness) a neurosis associated with health, with the youth of a people, and with youthfulness? What is revealed in that synthesis of god and goat in the satyr? Out of what personal experience, what impulse, did the Greeks have to imagine the Dionysian enthusiast and original man as a satyr? And what about the origin of the tragic chorus?
In those centuries when the Greek body flourished and the Greek soul bubbled over with life, perhaps there were endemic raptures, visions, and hallucinations which entire communities, entire cultural bodies, shared. What if it were the case that the Greeks, right in the midst of their rich youth, had the desire for tragedy and were pessimists? What if it was clearly lunacy, to use a saying from Plato, which brought the greatest blessings throughout Hellas?
And, on the other hand, what if, to turn the issue around, it was clearly during the time of their dissolution and weakness that the Greeks became constantly more optimistic, more superficial, more hypocritical, with a lust for logic and rational understanding of the world, as well as "more cheerful" and "more scientific"? What's this? In spite of all "modern ideas" and the judgments of democratic taste, could the victory of optimism, the developing hegemony of reasonableness, practical and theoretical utilitarianism, as well as democracy itself (which occurs in the same period) perhaps be a symptom of failing power, approaching old age, physiological exhaustion, all these factors rather than pessimism? Was Epicurus an optimist for the very reason that he was suffering? We see that this book was burdened with an entire bundle of difficult questions. Let us add its most difficult question: What, from the point of view of living, does morality mean? . . .