Every unity either participates in the One or is itself the One.
Πᾶν τὸ ἓν ἢ μετέχει τοῦ ἑνὸς ἢ αὐτοέν ἐστιν.

Philosophers
Proclus
Born 412 in Constantinople, Proclus was the last great philosopher of late antiquity, head of the Athenian Academy for nearly fifty years. His Elements of Theology, 211 propositions modelled on Euclid, threaded one line.
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Source: Elements of Theology, Prop. 4Verified
Proclus's Other Quotes
Related Quotes
Everything that is capable of turning back upon itself is incorporeal.
-- Porphyry
All things are in all things, but in each in the way that suits its own nature.
-- Porphyry
All beings proceed from the One.
-- Proclus
All is number.
-- Pythagoras
Strip away everything.
-- Plotinus
You will not find thinking apart from Being, in which it is expressed.
-- Parmenides