Accommodationists further accuse scientists of having “faith in reason.” Yet reason is not an a priori assumption, but a tool that’s been shown to work. We don’t have faith in reason; we use reason, and we use it because it produces results and progressive understanding...
Reason is simply the way we justify our beliefs, and if you’re not using it, whether you’re justifying religious or scientific beliefs, you deserve no one’s attention.

Reasoning is a robust source of hope and confidence in a world darkened by murky deeds – past and present. It is not hard to see why this is so. Even when we find something immediately upsetting, we can question that response and ask whether it is an appropriate reaction and whether we should really be guided by it. Reasoning can be concerned with the right way of viewing and treating other people, other cultures, other claims, and with examining different grounds for respect and tolerance.

Reason tends to check selfish impulses and to grant the satisfaction of legitimate impulses in others.

It is by the activity of our passions, that our reason improves: we covet knowledge merely because we covet enjoyment, and it is impossible to conceive why a man exempt from fears and desires should take the trouble to reason.

Reason requires all things to have a use and be appropriate and fitted to the purpose for which they are used.

Few people are prepared to use their reason without fear or favor, or bold enough to apply it relentlessly to every moral, political and social issue: to kings and ministers, to men in high places, to the philosophers, to absolutely every scientific and artistic principle. And if we don't, we're doomed to remain mediocre.

There is no just cause for apprehending that we shall be misled by the proper exercise of reason on any subject which may be proposed for our consideration. The only danger is of making an improper use of this faculty, which is one of the most common faults to which our nature is liable. Most men profess that they are guided by reason in forming their opinions; but if this were really the case, the world would not be overrun with error; there would not be so many dangerous and absurd opinions propagated and pertinaciously defended.

When Spinoza in the seventeenth century used the word reason, he meant an attitude toward life in which the mind united the emotions with the ethical goals and other aspects of the “whole man.” When people today use the term they almost always imply a splitting of the personality. They ask in one form or another: “Should I follow reason or give way to sensual passions and needs or be faithful to my ethical duty?

Reason … contradicts the established order of men and things on behalf of existing societal forces that reveal the irrational character of this order — for “rational” is a mode of thought and action which is geared to reduce ignorance, destruction, brutality, and oppression.

Reason is the lesser faith that steers us when we have already lost a greater one.

The rights and duties of man thus simplified, it seems almost impertinent to attempt to illustrate truths that appear so incontrovertible: yet such deeply rooted prejudices have clouded reason, and such spurious qualities have assumed the name of virtues, that it is necessary to pursue the course of reason as it has been perplexed and involved in error, by various adventitious circumstances, comparing the simple axiom with casual deviations.
Men, in general, seem to employ their reason to justify prejudices, which they have imbibed, they cannot trace how, rather than to root them out. The mind must be strong that resolutely forms its own principles; for a kind of intellectual cowardice prevails which makes many men shrink from the task, or only do it by halves. Yet the imperfect conclusions thus drawn, are frequently very plausible, because they are built on partial experience, on just, though narrow, views.

"A reason or a purpose is a combination of "wants" and "don't wants"."

The rehabilitation of reason is urgent because it is only through the proper use of reason that we can find our way out of the quagmires in which many big issues of our time have become stuck. Without a clear sense of what it means for one point of view to be more reasonable than another, it seems that the position one adopts is ultimately based on nothing more than personal opinion or preference.

Where the senses fail us, reason must step in.