If a dog jumps into your lap, it is because he is fond of you; but if a cat does the same thing, it is because your lap is warmer..

There are no whole truths: all truths are half-truths. It is trying to treat them as whole truths that plays to the devil..

Not a sentence or a word is independent of the circumstances under which it is uttered..

Fundamental progress has to do with the reinterpretation of basic ideas..