That man is worthless who knows how to receive a favor, but not how to return one.
No guest is so welcome in a friend's house that he will not become a nuisance after three days.
He who bravely endures evils, in time reaps the reward.
I regard that man as lost, who has lost his sense of shame.
How often we see the greatest genius buried in obscurity!
Remind a man of what he remembers, and you will make him forget it.