Creativity is intelligence having fun.

To raise new questions, new possibilities, to regard old problems from a new angle, requires creative imagination and marks real advance in science.

Creativity is often blocked to trying to be perfect. Creativity is allowing yourself to make mistakes.

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

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

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

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.

The test of a first-rate intelligence is the ability to hold two opposed ideas in the mind at the same time, and still retain the ability to function.

What a distressing contrast there is between the radiant intelligence of the child and the feeble mentality of the average adult.