Archē

Arche (Ancient Greek: ) is a Greek word with primary senses "beginning", "origin" or "source of action". (εξ’ ἀρχής: from the beginning, οr εξ’ ἀρχής λόγος: the original argument), and later first principle or element, first so used by Anaximander (Simplicius in Ph. 150.23), principles of knowledge (ἀρχαί) (Aristot. Metaph. 995b8). By extension, it may mean "first place, power", "method of government", "empire, realm", "authorities" (in plural: ἀρχαί), "command". The first principle or element corresponds to the "ultimate underlying substance" and "ultimate undemonstrable principle". In the philosophical language of the archaic period (8th-6th century BC), arche (or archai) designates the source, origin or root of things that exist. In ancient Greek philosophy, Aristotle foregrounded the meaning of arche as the element or principle of a thing, which although undemonstrable and intangible in itself, provides the conditions of the possibility of that thing.

In the mythical Greek cosmogony of Hesiod (8th-7th century BC), the origin of the world is Chaos, considered as a divine primordial condition, from which everything else appeared. In the creation "chaos" is a gaping-void, but later the word is used to describe the space between the earth and the sky, after their separation. "Chaos" may mean infinite space, or a formless matter which can be differentiated. The notion of temporal infinity was familiar to the Greek mind from remote antiquity in the religious conception of immortality. The conception of the "divine" as an origin influenced the first Greek philosophers.

In the Orphic cosmogony, the unaging Chronos produced Aether and Chaos and made in divine Aether a silvery egg, from which everything else appeared.

In the mythological cosmogonies of the Near East, the universe is formless and empty and the only existing thing prior to creation was the water abyss. In the Babylonian creation story, Enuma Elish the primordial world is described as a "watery chaos" from which everything else appeared. Something similar is described in Book of Genesis where the spirit of God is moving upon the dark face of the waters.

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