“The heart has its reasons, which reason does not know.” This famous line from Pascal’s Pensées draws a wise distinction between religious faith and intellectual inquiry. The two have different motivations and pertain to different domains of experience. They are like oil and water, things that do not mix and should not be confused. Pascal was a brilliant mathematician, and he did not allow his Catholic beliefs to interfere with his scholarly investigations. He regarded the authority of the church to be meaningless in such matters. He argued that “all the powers in the world can by their authority no more persuade people of a point of fact than they can change it.”1 That is to say, facts are facts, and faith has no business dealing in the world of facts. Faith resides in the heart and in one’s way of living in the world.