The Glossary

Apollo and Dionysus

The two drives of Greek tragedy: the Apollonian gift of form, measure, and clarity, and the Dionysian torrent of life, ecstasy, and dissolution.

From Friedrich Nietzsche.

In Symbols of the Psyche

Apollo: Form, measure, clarity, and the beautiful image.
Dionysus: Ecstasy, intoxication, and the dissolving of every boundary.
The Two: The first division, and the tension that drives the psyche.
The Vine: Ecstasy, and the blood of the god.

More from Friedrich Nietzsche

The Death of God · Eternal Recurrence · Nihilism · The Overman · The Revaluation of All Values · The Three Metamorphoses · The Will to Power