— A man for whom accident discovers sense, is not a rational being. A man only is so who understands, who distinguishes, who tests it.

All truth is given by revelation, either general or special, and it must be received by reason. Reason is the God-given means for discovering the truth that God discloses, whether in his world or his Word. While God wants to reach the heart with truth, he does not bypass the mind.

Faith and reason are like two wings on which the human spirit rises to the contemplation of truth; and God has placed in the human heart a desire to know the truth — in a word, to know himself — so that, by knowing and loving God, men and women may also come to the fullness of truth about themselves.

Reason in man is rather like God in the world.

If we submit everything to reason our religion will be left with nothing mysterious or supernatural. If we offend the principles of reason our religion will be absurd and ridiculous . . . There are two equally dangerous extremes: to exclude reason, to admit nothing but reason.

The worship of reason is arrogance and betrays a lack of intelligence. The rejection of reason is cowardice and betrays a lack of faith.

Some people, in order to discover God, read books. But there is a great book: the very appearance of created things. Look above you! Look below you! Read it. God, whom you want to discover, never wrote that book with ink. Instead, He set before your eyes the things that He had made. Can you ask for a louder voice than that?

Those who invalidate reason, ought seriously to consider, 'whether they argue against reason, with or without reason; if with reason, then they establish the principle, that they are laboring to dethrone;' but if they argue without reason, (which, in order to be consistent with themselves, they must do,) they are out of the reach of rational conviction, nor do they deserve a rational argument.

Human reason reduced to its own resources is perfectly worthless, not only for creating but also for preserving any political or religious association, because it only produces disputes, and, to conduct himself well, man needs not problems but beliefs. His cradle should be surrounded by dogmas, and when his reason is awakened, it should find all his opinions ready-made, at least all those relating to his conduct. Nothing is so important to him as prejudices.

It is surely absurd to seek God in terms of a preconceived idea of what God is. To seek thus is only to find what we know already, which is why it is so easy to deceive oneself into all manner of “supernatural” experiences and visions. To believe in God and to look for the God you believe in is simply to seek confirmation of an opinion. To ask for a revelation of God’s will, and then to “test” it by reference to your preconceived moral standards is to make a mockery of asking. You knew the answer already. Seeking for “God” in this way is no more than asking for the stamp of absolute authority and certainty on what you believe in any case, for a guarantee that the unknown and the future will be a continuation of what you want to retain from the past — a bigger and better fortress for “I.” Ein feste Burg! If we are open only to discoveries which will accord with what we know already, we may as well stay shut. This is why the marvelous achievements of science and technology are of so little real use to us. It is in vain that we can predict and control the course of events in the future, unless we know how to live in the present. It is in vain that doctors prolong life if we spend the extra time being anxious to live still longer. It is in vain that engineers devise faster and easier means of travel if the new sights that we see are merely sorted and understood in terms of old prejudices. It is in vain that we get the power of the atom if we are just to continue in the rut of blowing people up.

I love reason, but my love does not make me a fanatic,' Brotteaux answered. 'Reason is our guide, a light to show us our way; but if you make a divinity of it, it will blind you and lead you into crime

And when someone suggests you believe in a proposition, you must first examine it to see whether it is acceptable, because our reason was created by God, and whatever pleases our reason can but please divine reason, of which, for that matter, we know only what we infer from the processes of our own reason by analogy and often by negation.

Let man be pleased with whatever has pleased God; let him marvel at himself and his own resources for this very reason, that he cannot be overcome, that he has the very powers of evil subject to his control, and that he brings into subjection chance and pain and wrong by means of that strongest of powers – reason. Love reason! The love of reason will arm you against the greatest hardships.

We know the truth not only through our reason but also through our heart. It is through the latter that we know first principles, and reason, which has nothing to do with it, tries in vain to refute them.