When a man's eyes are sore his friends do not let him finger them, however much he wishes to, nor do they themselves touch the inflammation: But a man sunk in grief suffers every chance comer to stir and augment his affliction like a running sore; and by reason of the fingering and consequent irritation it hardens into a serious and intractable evil.
PlutarchTo make no mistakes is not in the power of man; but from their errors and mistakes the wise and good learn wisdom for the future.
PlutarchLearn to be pleased with everything, with wealth so far as it makes us beneficial to others; with poverty, for not having much to care for; and with obscurity, for being unenvied.
Plutarch