Reason and love are sworn enemies.

If reason is a rebel unto faith, so is passion unto reason.

Reason is the greatest enemy that faith has: it never comes to the aid of spiritual things, but--more frequently than not--struggles against the divine Word, treating with contempt all that emanates from God.

It's not at all uncommon to find a person's desires compelling him to go against his reason, and to see him cursing himself and venting his passion on the source of the compulsion within him. It's as if there were two warring factions, with passion fighting on the side of reason. But I'm sure you won't claim that you had ever, in yourself or in anyone else, met a case of passion siding with his desires against the rational mind, when the rational mind prohibits resistance.

La raison et l'amour sont ennemis jurés.

Reason is no match for passion.

Anything done against faith or conscience is sinful.

First, Whenever a man talks loudly against religion, always suspect that it is not his reason, but his passions, which have got the better of his creed.

What may at first occur on this head, is, that as nothing can be contrary to truth or reason, except what has a reference to it, and as the judgments of our understanding only have this reference, it must follow, that passions can be contrary to reason only so far as they are accompany'd with some judgment or opinion. According to this principle, which is so obvious and natural, `tis only in two senses, that any affection can be call'd unreasonable. First, When a passion, such as hope or fear, grief or joy, despair or security, is founded on the supposition or the existence of objects, which really do not exist. Secondly, When in exerting any passion in action, we chuse means insufficient for the design'd end, and deceive ourselves in our judgment of causes and effects. Where a passion is neither founded on false suppositions, nor chuses means insufficient for the end, the understanding can neither justify nor condemn it. `Tis not contrary to reason to prefer the destruction of the whole world to the scratching of my finger. `Tis not contrary to reason for me to chuse my total ruin, to prevent the least uneasiness of an Indian or person wholly unknown to me. `Tis as little contrary to reason to prefer even my own acknowledge'd lesser good to my greater, and have a more ardent affection for the former than the latter. A trivial good may, from certain circumstances, produce a desire superior to what arises from the greatest and most valuable enjoyment; nor is there any thing more extraordinary in this, than in mechanics to see one pound weight raise up a hundred by the advantage of its situation. In short, a passion must be accompany'd with some false judgment. in order to its being unreasonable; and even then `tis not the passion, properly speaking, which is unreasonable, but the judgment.

Faith feels itself secure neither with universal consent, nor with tradition, nor with authority. It seeks support of its enemy, reason.

Nothing can be more contrary to religion and the clergy than reason and common sense.

I am deeply opposed to violence in all its forms, and yet I myself am violent in spirit, in my quarrel with the unbeatable: myself, my daemon, God, the human race, the world, time, pain, disorder, disgrace and death.

From whatever side the matter is regarded, it is always found that reason confronts our longing for personal immortality and contradicts it. And the truth is, in all strictness, that reason is the enemy of life.

If the world is against the truth, then I am against the world.