I would be very ashamed of my civilization if we did not try to find out if there is life in outer space.

The prediction of nuclear winter is drawn not, of course, from any direct experience with the consequences of global nuclear war, but rather from an investigation of the governing physics.

Science is a way of thinking much more than it is a body of knowledge.

The cure for a fallacious argument is a better argument, not the suppression of ideas.

UFOs: The reliable cases are uninteresting and in the interesting cases are unreliable.

An extraterrestrial being, newly arrived on Earth - scrutinizing what we mainly present to our children in television, radio, movies, newspapers, magazines, the comics, and many books - might easily conclude that we are intent on teaching them murder, rape, cruelty, superstition, credulity, and consumerism. We keep at it, and through constant repetition many of them finally get it.

My fundamental premise about the brain is that its workings - what we sometimes call "mind" - are a consequence of its anatomy and physiology, and nothing more.