Wit is a dangerous weapon, even to the possessor, if he knows not how to use it discreetly.

The first method of estimating the intelligence of a ruler is to look at the men he has around him.

It is not reason which is the guide of life, but custom.

It doesn't matter how smart you are unless you stop and think.

In walking, the will and the muscles are so accustomed to working together and performing their task with so little expenditure of force that the intellect is left comparatively free.

Intelligent people tend to have less friends than the average person. The smarter you are, the more selective you become.

To criticize is to appreciate, to appropriate, to take intellectual possession, to establish in fine a relation with the criticized thing and to make it one's own.