One can be committed to conformity or one can be committed to truth, but not both.

A willingness to engage in the give and take of argument displays a commitment to cognitive egalitarianism - the proposition that all people should be treated as intellectual equals, and that no individual can legitimately claim a privileged immunity from the burden of proof.

The leap of faith is a strategic impasse that confronts every Christian in search of converts; and, as he sees the matter, there is no wrong way to become a Christian. It is the end that is importnat, not the means; it does not matter why you believe, so long as you believe. For the philosopher, in contrast, the paramount issue is the justification of belief, not the fact of belief itself.

When the atheist is told that God is unknowable, he may interpret this claim in one of two ways. He may suppose, first, that the theist has acquired knowledge of a being that, by his own admission, cannot possibly be known; or, second, he may assume that the theist simply does not know what he is talking about.

Reason is not one tool of thought among many, it is the entire toolbox. To advocate that reason be discarded in some circumstances is to advocate that thinking be discarded - which leaves one in the position of attempting to do a job after throwing away the required instrument.

Just as Christianity must destroy reason before it can introduce faith, so it must destroy happiness before it can introduce salvation.

The significant contribution of empiricism was not the eradication of certainty, but the eradication of infallibility as a criterion of certainty. And this shift from infallibilism to fallibilism has profound consequences not only for toleration, but also for the subordination of faith to reason and theology to philosophy.