The philosophers define man as a rational creature, and yet the same philosophers thunder that their intellectual opponents are irrational creatures. I think, “rational” is not an objective term; it’s a relative term. When someone says that men are rational creatures, then you have the right to demand, “Rational, compared to what?” If we are rational compared to the chimpanzees, wildebeest, lions, cats, and dogs, then that does not inspire much confidence in the quality of the human mind. Man cannot be defined as a rational creature because we have a massive drive to act in an irrational manner. Philosophers ought to know this—much of metaphysics and ethics is highly speculative and irrational. A better definition would be that man is the only creature with the capacity for faith.