There is nothing lost by civility.

Some suggestions for you :

He who abandons his family, god forsakes him.

A good friend will fit you like ring to finger.

There is nothing like leather.

For a new sin, a new penance.

There is nothing hidden between Heaven and Earth.

Blood is inherited; character is earned.

Proverbs in conversation are torches in darkness.

The man to whom god gives no children, the devil gives nieces and nephews.

A mother has little love for a son who did not give her pain.

Join with good men and you will be one of them.

When the hare leaps, there are no lame greyhounds.

Blood is inherited and virtue is acquired.

He who would be a redeemer ends up crucified.

Treat the lesser as you would have the greater treat you.