In childhood our credulity serves us well. It helps us to pack, with extraordinary rapidity, our skulls full of the wisdom of our parents and our ancestors. But if we don't grow out of it in the fullness of time, our ... nature makes us a sitting target for astrologers, mediums, gurus, evangelists, and quacks. We need to replace the automatic credulity of childhood with the constructive skepticism of adult science.

The Virgin Birth, the Resurrection, the raising of Lazarus, even the Old Testament miracles, all are freely used for religious propaganda, and they are very effective with an audience of unsophisticates and children

You can make some inferences about a man's character if you know something about the conditions in which he has survived and prospered.

As a scientist, I am hostile to fundamentalist religion because it actively debauches the scientific enterprise. It teaches us not to change our minds, and not to want to know exciting things that are available to be known. It subverts science and saps the intellect.

If the universe were just electrons and selfish genes, meaningless tragedies ... are exactly what we should expect, along with equally meaningless good fortune. Such a universe would be neither evil nor good in intention ... The universe we observe has precisely the properties we should expect if there is, at bottom, no design, no purpose, no evil and no good, nothing but blind pitiless indifference.

The distribution of species on islands and continents throughout the world is exactly what you'd expect if evolution was a fact. The distribution of fossils in space and in time are exactly what you would expect if evolution were a fact. There are millions of facts all pointing in the same direction and no facts pointing in the wrong direction.

Some people find clarity threatening. They like muddle, confusion, obscurity. So when somebody does no more than speak clearly it sounds threatening.