Book XI · 28
Consider what a man Socrates was when he dressed himself in a skin, after Xanthippe had taken his cloak and gone out, and what Socrates said to his friends who were ashamed of him and drew back from him when they saw him dressed thus.
Think of Socrates with the sheepskin wrapped round him, when Xanthippe had gone off with his coat, and what he said to his friends when they drew back in their embarrassment at seeing him thus accoutred.
Marcus Aurelius, Meditations XI.28. Translated by George Long (1862). The Stoic Library.