Meditations 8.11

This thing, what is it in itself, in its own constitution? What is its substance and material? And what its causal nature [or form]? And what is it doing in the world? And how long does it subsist?

Marcus Aurelius, Meditations 8.11, translated by George Long

What of itself is the thing in question as individually constituted? What is the substance and material of it? What the causal part? What doeth it in the Universe? How long doth it subsist?

Marcus Aurelius, Meditations 8.11, translated by C. R. Haines