When Anaxagoras was told of the death of his son, he only said, "I knew he was mortal." So we in all casualties of life should say "I knew my riches were uncertain, that my friend was but a man." Such considerations would soon pacify us, because all our troubles proceed from their being unexpected.
PlutarchBeing conscious of having done a wicked action leaves stings of remorse behind it, which, like an ulcer in the flesh, makes the mind smart with perpetual wounds; for reason, which chases away all other pains, creates repentance, shames the soul with confusion, and punishes it with torment.
Plutarch