Imagine a person who comes in here tonight and argues “no air exists” but continues to breathe air while he argues. Now intellectually, atheists continue to breathe—they continue to use reason and draw scientific conclusions [which assumes an orderly universe], to make moral judgments [which assumes absolute values]—but the atheistic view of things would in theory make such “breathing” impossible. They are breathing God’s air all the time they are arguing against him.

-Greg L. Bahnsen