Promise me you'll always remember: You're braver than you believe, and stronger than you seem, and smarter than you think.

An intelligent person is never afraid or ashamed to find errors in his understanding of things.

Smartness runs in my family. When I went to school I was so smart my teacher was in my class for five years.

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

Being an intellectual creates a lot of questions and no answers.

Be smarter than other people, just don't tell them so.

My success was not based so much on any great intelligence but on great common sense.

An intellectual is a man who takes more words than necessary to tell more than he knows.

Genius is initiative on fire.

The voice of the intellect is a soft one, but it does not rest until it has gained a hearing.