There is not a discovery in science, however revolutionary, however sparkling with insight, that does not arise out of what went before.

Experimentation is the least arrogant method of gaining knowledge. The experimenter humbly asks a question of nature.

I am an atheist, out and out. It took me a long time to say it.

The essential building block is...the true love that is impossible to define for those who have never experienced it and unnecessary to define for those who have.

A subtle thought that is in error may yet give rise to fruitful inquiry that can establish truths of great value.

I have written 240 books on a wide variety of topics. . . . Some of it I based on education I received in my school, but most of it was backed by other ways of learning - chiefly in the books I obtained in the public library.

To those who are trained in science, creationism seems a bad dream, a sudden coming back to life of a nightmare, a renewed march of an Army of the Night risen to challenge free thought and enlightenment.