The most glorious exploits do not always furnish us with the clearest discoveries of virtue or vice in men.
PlutarchThe poor go to war, to fight and die for the delights, riches, and superfluities of others.
PlutarchSo also it is good not always to make a friend of the person who is expert in twining himself around us; but, after testing them, to attach ourselves to those who are worthy of our affection and likely to be serviceable to us.
Plutarch