"I am composed of form and matter; neither of them will perish into non-existence, as neither of them came into being out of non-existence. Every part of me then will be reduced by change into some other part of the universe, that again will change into another part of the universe, and so on forever. And as a result of such a change, I too now exist, and those who begot me existed, and so on forever in the other direction. For nothing prevents me from saying this, even if the universe is administered according to definite periods of revolution" (Section 5, part 13).
Marcus Aurelius. The Meditations Of Marcus Aurelius. George Long (trans.), in Great Books of the Western World. Vol. 12, Encyclopædia Britannica, 1952.