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Eternity

Key terms
Time and the world
God and the soul
What does not pass away
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Eternity and time

Is eternity endless time or something beyond time? Eternity can mean time without beginning or end, or the absence of time and change altogether. These readings ask which meaning each writer holds and what follows for God and the world.

4 readings

In Book I, chapter 9, of On the Heavens Aristotle concludes that nothing, neither “place”, “void” nor “time”, lies outside the heaven. He speaks of what is beyond as “unalterable and unmodified”, and of the “duration” (aion) of the whole heaven, a word which he says “possessed a divine significance for the ancients”. The passage is the source of a famous derivation of the word, and it stands under this term for that reason.

In the Summa Theologica, First Part, question 10, article 2, St Thomas asks whether God is eternal. In the body of the article he says that “the idea of eternity follows immutability”, as time follows movement, and that God “is His own eternity”. The question defines eternity after the definition of Boethius, and the article gives the Church’s standard scholastic statement on the eternity of God.

In Part IV, chapter 46, of Leviathan, “Of Darknesse from Vain Philosophy”, Hobbes criticises the doctrines of the schools. He reports that “they will not have” eternity to be “an Endlesse Succession of Time” but a “Nunc-stans”, “the Standing still of the Present Time”. The passage is a criticism of the scholastic definition of eternity, and it stands under this term as the opposed view.

Definition VIII of Part I of Spinoza’s Ethics defines eternity. He says that by it he means “existence itself”, conceived as following from the “definition” of the thing, and that it “cannot be explained by means of continuance or time”. The definition belongs to the geometrical order of the Ethics, and it stands under this term as his definition.