If you can't think of an observation that could disprove a theory, that theory simply isn't scientific.

All scientific progress requires a climate of strong skepticism.

The biogeographic evidence for evolution is now so powerful that I have never seen a creationist book, article, or lecture that has tried to refute it. Creationists simply pretend that the evidence doesn't exist.

Faith is a padlock of the mind, and few keys can open it.

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.

If the history of science teaches us anything, it is that what conquers our ignorance is research, not giving up and attributing our ignorance to the miraculous work of a creator.

It takes a profound hypocrisy to try to reconcile for others things that you can't reconcile for yourself.