We cannot live by reason alone.

Simply to acquiesce in skepticism can never suffice to overcome the restlessness of reason.

what reason did not dictate, reason cannot explain.

I do not believe—indeed, I deem it a comic blunder to believe—that the exercise of reason is sufficient to explain our condition and where necessary to remedy it, but I do believe that the exercise of reason is at all times necessary...

A word to the wise is not sufficient if it doesn't make any sense.

Reason is no match for passion.

Intention, good or bad, is not enough.

Reason cannot save us, nothing can; but reason can mitigate the cruelty of living.

There's more to life than just the things that can be explained by encyclopedias and facts. Facts alone are not adequate.

But reason does not govern love.

To believe that any action based on an ignorance of fact can possibly succeed, is to abandon the use of reason.

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 reach of rational conviction, nor do they deserve a rational argument.

Reason spoiled, marred, or robbed of its perfection, ceaseth to be rational, and should not be called reason; inasmuch as it is premised to be depraved, or degenerated from a rational nature; and in consequence of the deprivation of its nature, should also be deprived of its name, and called subterfuge, or some such like name, which might better define its real character. 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.

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.