Compete not with a friend.
More Latin Proverbs:
He tells me my way, and knows not his own.Latin
Obedience is the mother of happiness.
Latin
He who knows not how to employ his leisure hath more cares on his mind than the most busy of busily-engaged men.
Latin
It is a disgrace to be praised by those who deserve no praise.
Latin
Even a straw becomes heavy, if you carry it far enough.
Latin
You have left the sheep with the wolf for safe custody.
Latin