Being 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.
PlutarchA good man will take care of his horses and dogs, not only while they are young, but when old and past service.
Plutarch