Also, I've always thought one of the best and most underrated lines from Voltaire's memoirs is this one, from immediately after the 1753 breakup:

Leaving my palace of Alcina, I went to pass a month with the Dutchess of Saxe-Gotha, the best of Princesses, full of gentleness, discretion, and equanimity, and who, God be thanked, did not make verses.

I remember laughing out loud when I first read it, and it still has the power to make me dissolve into helpless sniggering.