Meditations 8.30

Speak both in the senate and to every man, whoever he may be, appropriately, not with any affectation: use plain discourse.

Marcus Aurelius, Meditations 8.30, translated by George Long

Say thy say in the Senate or to any person whatsoever becomingly and naturally. Use sound speech.

Marcus Aurelius, Meditations 8.30, translated by C. R. Haines