Common sense is not so common.

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

Every true genius is bound to be naive.

I’m not offended by all the dumb blonde jokes because I know I’m not dumb… and I also know that I’m not blonde.

I can’t tell you if genius is hereditary, because heaven has granted me no offspring.

Mad, adj. Affected with a high degree of intellectual independence.

Genius is more often found in a cracked pot than in a whole one.

The invention of IQ does a great disservice to creativity in education.

Everyone is a genius at least once a year. The real geniuses simply have their bright ideas closer together.

I must have a prodigious quantity of mind; it takes me as much as a week sometimes to make it up.