Courteous men learn courtesy from the discourteous.
More Persian Proverbs:
Courtesie is cumbersome to them that ken it not.Persian
You can't escape death and guests.
Persian
A camel does not drink with a spoon.
Persian
He who wants the rose must respect the thorn.
Persian
Go as far as you can see, and when you get there you'll see further.
Persian
The cripple will always find a stone to kick.
Persian