So 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.
PlutarchWhen another is asked a question, take special care not to interrupt to answer it yourself.
PlutarchBlinded as they are to their true character by self-love, every man is his own first and chiefest flatterer, prepared, therefore, to welcome the flatterer from the outside, who only comes confirming the verdict of the flatterer within.
Plutarch