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.
AesopThere was once a Bald Man who sat down after work on a hot summer's day. A Fly came up and kept buzzing about his bald pate, and stinging him from time to time. The Man aimed a blow at his little enemy, but — whack — his palm came on his head instead; again the Fly tormented him, but this time the Man was wiser and said: YOU WILL ONLY INJURE YOURSELF IF YOU TAKE NOTICE OF DISPICABLE ENEMIES.
Aesop