Evil is not any superhuman, but it is HUMAN. - Agatha Christie

Good advice is always certain to be ignored, but that's no reason not to give it.

"Oh! Do not excite yourself. Shall I say that he interested me because he was trying to grow a mustache and as yet the result is poor." Poirot stroked his own magnificent mustache tenderly. "It is an art," he murmured, "the growing of the mustache! I have sympathy for all who attempt it."

It was the technique of a man who selected thoughts as one might select pieces of a jigsaw puzzle. In due course they would be reassembled together so as to make a clear and coherent picture. At the moment the important thing was the selection, the separation.