Proverbs in conversation are torches in darkness.

Some suggestions for you :

Blood is inherited; character is earned.

For a new sin, a new penance.

Blood is inherited and virtue is acquired.

He who abandons his family, god forsakes him.

When the hare leaps, there are no lame greyhounds.

There is nothing lost by civility.

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

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

There is nothing like leather.

A good friend will fit you like ring to finger.

There is nothing hidden between Heaven and Earth.

He who would be a redeemer ends up crucified.

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

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