No one cries for losing money but the one who earned the money, no one cries for losing the child but his mother. (Syrian Proverb) - More Syrian Proverbs...
He who has received a kindness forgets it; he who has been injured remembers it. [To benefit one and injure another at the same time is a losing game, for revenge is a stronger feeling than gratitude.] (Latin Proverb) - More Latin Proverbs...