A doubtful friend is worse than a certain enemy. Let a man be one thing or the other, and we then know how to meet him.
Example is the best precept.
Those who cry the loudest are not always the ones who are hurt the most
Never trust the advice of a man in difficulties.
Faithful are the wounds of a friend; but the kisses of an enemy are deceitful.
Familiarity gives rise to contempt.