I find intelligence sexy. I find a sense of humor sexy. I find sensitivity sexy.

I'm a pessimist because of intelligence, but an optimist because of will.

Men create real miracles when they use their God-given courage and intelligence.

The question that will decide our destiny is not whether we shall expand into space. It is: shall we be one species or a million? A million species will not exhaust the ecological niches that are awaiting the arrival of intelligence.

Chess is the most elaborate waste of human intelligence outside of an advertising agency.