Intelligence is quickness to apprehend as distinct form ability, which is capacity to act wisely on the thing apprehended.

Fools act on imagination without knowledge, pedants act on knowledge without imagination

It takes an extraordinary intelligence to contemplate the obvious.

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.

No period of history has ever been great or ever can be that does not act on some sort of high, idealistic motives, and idealism in our time has been shoved aside, and we are paying the penalty for it.

I have suffered a great deal from writers who have quoted this or that sentence of mine either out of its context or in juxtaposition to some incongruous matter which quite distorted my meaning, or destroyed it altogether.