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Eternity is a child playing, playing checkers; the kingdom belongs to a child.

"Refutation of all heresies, Book IX (Fragment 52)". Book by Hippolytus of Rome (3rd century AD), as later translated in Carl Avren Levenson and Jonathan Westphal "Reality" (p. 10), 1994.
Eternity is a child playing, playing checkers; the kingdom belongs to a child.