The intellect is always fooled by the heart.

Appearances to the mind are of four kinds. Things either are what they appear to be; or they neither are, nor appear to be; or they are, and do not appear to be; or they are not, and yet appear to be. Rightly to aim in all these cases is the wise man’s task.

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.

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

Men have called me mad; but the question is not yet settled, whether madness is or is not the loftiest intelligence.

I've always felt that a person's intelligence is directly reflected by the number of conflicting points of view he can entertain simultaneously on the same topic.

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

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