All scientific progress requires a climate of strong skepticism.

The fact that both Jews and Christians ignore some of God's or Jesus's commands, but scrupulously obey others, is absolute proof that people pick and choose their morality not on the basis of its divine source, but because it comports with some innate morality that they derived from other sources.

Now, science cannot completely exclude the possibility of supernatural explanation. It is possible though very unlikely that our whole world is controlled by elves. But supernatural explanations like these are simply never needed; we manage to understand the natural world just fine using reason and materialism.

There is no horror, no amount of evil in the world, that a true believer can't rationalize as consistent with a loving God. It's the ultimate way of fooling yourself.

We are the one creature to whom natural selection has bequeathed a brain complex enough to comprehend the laws that govern the universe. And we should be proud that we are the only species that has figured how we came to be.

We don't have faith in reason; we use reason because, unlike revelation, it produces results and understanding. Even discussing why we should use reason employs reason!

In the end theologians are jealous of science, for they are aware that it has greater authority than do their own ways of finding "truth": dogma, authority, and revelation. Science does find truth, faith does not.