A stingy young man just donated a large sum of money to a charity. However, the next day, someone came knocking at his door.
– Sir, thank you very much for the check; it will help us accomplish a lot of charitable work. But I must remind you of something you may have forgotten. Surely, you must have overlooked it because the check is not signed…
– You are mistaken; I am not forgetful. It’s just that when I do generous acts, I prefer to keep them discreet… If you insist that I sign it, I will have to assist another charity instead.