All seed except Mary was vitiated [by original sin].

The first duty of a man is the seeking after and the investigation of truth.

Religion comforts us for the defeat of our will to power. It adds new worlds to ours, and thus brings us hope of new conquests and new victories. We are converted to religion out of fear of suffocating within the narrow confines of this world.

Revolutions are the locomotives of history.

The difference between the most dissimilar characters, between a philosopher and a common street porter, for example, seems to arise not so much from nature, as from habit, custom, and education.

Leibniz's theory on the subject as substantia ideans in the sense of a causative agent of decision and acts stands much closer to a materialist interpretation of history than does a philosophy which reduces the thinking subject to the role of subsuming protocol sentences under general propositions and deducing other sentences from them.

The conception of the necessary unit of all that is resolves itself into the poverty of the imagination, and a freer logic emancipates us from the straitwaistcoated benevolent institution which idealism palms off as the totality of being.

To become sober is: to come to oneself in self-knowledge and before God as nothing before him, yet infinitely, unconditionally engaged.

The spirit of Poesy is the morning light, which makes the Statue of Memnon sound.

In its relation to the reality of daily life, the high culture of the past was many things-opposition and adornment, outcry and resignation. But it was also the appearance of the realm of freedom: the refusal to behave.

Men of learning are those who have read the contents of books. Thinkers, geniuses, and those who have enlightened the world and furthered the race of men, are those who have made direct use of the book of the world.

I hear many condemn these men because they were so few. When were the good and the brave ever in a majority? Would you have had him wait till that time came? - till you and I came over to him? The very fact that he had no rabble or troop of hirelings about him would alone distinguish him from ordinary heroes. His company was small indeed, because few could be found worthy to pass muster. Each one who there laid down his life for the poor and oppressed was a picked man, culled out of many thousands, if not millions; apparently a man of principle, of rare courage, and devoted humanity; ready to sacrifice his life at any moment for the benefit of his fellow-man.

Despite laws and diversity initiatives, discrimination pervades workplaces. It's just more subtle, harder to prove, embedded in systems. Unconscious bias, cultural fit, networking advantages - discrimination continues through mechanisms that evade accountability while producing same outcomes.

Wit is cultured insolence.

I maintain that in every special natural doctrine only so much science proper is to be met with as mathematics; for... science proper, especially of nature, requires a pure portion, lying at the foundation of the empirical, and based upon à priori knowledge of natural things. ...the conception should be constructed. But the cognition of the reason through construction of conceptions is mathematical. A pure philosophy of nature in general, namely, one that only investigates what constitutes a nature in general, may thus be possible without mathematics; but a pure doctrine of nature respecting determinate natural things (corporeal doctrine and mental doctrine), is only possible by means of mathematics; and as in every natural doctrine only so much science proper is to be met with therein as there is cognition à priori, a doctrine of nature can only contain so much science proper as there is in it of applied mathematics.

They that be whole need not a physician, but they that are sick. But go ye and learn what that meaneth, I will have mercy, and not sacrifice: for I am not come to call the righteous, but sinners to repentance.

Philosophy, if it cannot answer so many questions as we could wish, has at least the power of asking questions which increase the interest of the world, and show the strangeness and wonder lying just below the surface even in the commonest things of daily life.

All systems of morality are based on the idea that an action has consequences that legitimize or cancel it. A mind imbued with the absurd merely judges that those consequences must be considered calmly. It is ready to pay up. In other words, there may be responsible persons, but there are no guilty ones, in its opinion. At very most, such a mind will consent to use past experience as a basis for its future actions.

That a man be willing, when others are so too, as farre-forth, as for Peace, and defence of himself he shall think it necessary, to lay down this right to all things; and be contented with so much liberty against other men, as he would allow other men against himself.

If you don't know how to die, don't worry; Nature will tell you what to do on the spot, fully and adequately. She will do this job perfectly for you; don't bother your head about it.

The utilitarian doctrine is, that happiness is desirable, and the only thing desirable, as an end; all other things being only desirable as means to that end.

The original thinking force of the universe progresses and develops itself in all possible determinations of which it is capable, just as the other original natural forces progress and assume all possible configurations. I am a particular determination of the formative force, like the plant; a particular determination of the peculiar motive force, like the animal; and in addition to this a determination of the thinking force: and the union of these three basic forces into one force, into one harmonious development, is the distinguishing characteristic of my species.

It is better to fight with a few good men against all the wicked, than with many wicked men against a few good men.

When all these things are lacking there is no culture; there is in the strictest sense of the word, barbarism. And let us not deceive ourselves, this is what is beginning to appear in Europe under the progressive rebellion of the masses. The traveller who arrives in a barbarous country knows that in that territory there are no ruling principles to which it is possible to appeal. Properly speaking, there are no barbarian standards. Barbarism is the absence of standards to which appeal can be made.

The poverty of the incapable, the distresses that come upon the imprudent, the starvation of the idle, and those shoulderings aside of the weak by the strong, which leave so many "in shallows and in miseries," are the decrees of a large, far-seeing benevolence.

The degree of one's emotion varies inversely with one's knowledge of the facts - the less you know the hotter you get.

It seems that thought itself has a power for which it has never been given credit.

The history of science is full of revolutionary advances that required small insights that anyone might have had, but that, in fact, only one person did.

We are asleep. Our Life is a dream. But we wake up sometimes, just enough to know that we are dreaming.

The foundation of irreligious criticism is: Man makes religion, religion does not make man.

Knowledge of the fact differs from knowledge of the reason for the fact.

We cannot think any true thought unless we want the true. Thinking is itself an aspect of practice.

It is not, what a lawyer tells me I may do; but what humanity, reason, and justice, tell me I ought to do.

The pleasures that give most joy are the ones that most rarely come.

Generals are, as a matter of course, allowed to be far more idiotic than ordinary human beings are permitted to be.

Critics who treat adult as a term of approval, instead of as a merely descriptive term, cannot be adult themselves. To be concerned about being grown up, to admire the grown up because it is grown up, to blush at the suspicion of being childish; these things are the marks of childhood and adolescence. And in childhood and adolescence they are, in moderation, healthy symptoms. Young things ought to want to grow. But to carry on into middle life or even into early manhood this concern about being adult is a mark of really arrested development. When I was ten, I read fairy tales in secret and would have been ashamed if I had been found doing so. Now that I am fifty I read them openly. When I became a man I put away childish things, including the fear of childishness and the desire to be very grown up.

To resign oneself or to blow out one's brains, that is the choice one faces at certain moments. In any case, the only real dignity is that of exclusion.

And the final event to himself has been, that, as he rose like a rocket, he fell like the stick.

The second half of a man's life is made up of nothing but the habits he has acquired during the first half.

All who delight in the pleasures of the belly, exceeding all measure in eating and drinking and love, find that the pleasures are brief and last but a short while-only so long as they are eating and drinking-but the pains that come after are many and endure. The longing for the same things keeps ever returning, and whenever the objects of one's desire are realized forthwith the pleasure vanishes, and one has no further use for them. The pleasure is brief, and once more the need for the same things returns.

Ambition is the death of thought.

The hatefulness of a hated person is "real"-in hatred you see men as they are; you are disillusioned; but the loveliness of a loved person is merely a subjective haze concealing a "real" core of sexual appetite or economic association. Wars and poverty are "really" horrible; peace and plenty are mere physical facts about which men happen to have certain sentiments.

We think it also necessary to express our astonishment that a government, desirous of being called free, should prefer connection with the most despotic and arbitrary powers in Europe.

In the darkest region of the political field the condemned man represents the symmetrical, inverted figure of the king.

As we speak cruel time is fleeing. Seize the day, believing as little as possible in the morrow.

The multiplication of our kind borders on the obscene; the duty to love them, on the preposterous.

A thing is important if anyone think it important.

The fact that the general incidence of leukemia has doubled in the last two decades may be due, partly, to the increasing use of x-rays for numerous purposes. The incidence of leukemia in doctors, who are likely to be so exposed, is twice that of the general public. In radiologists the incidence is ten times greater.

So our self-feeling in this world depends entirely on what we back ourselves to be and do.

Amy Kofman: Have you read all the books in here?Derrida: No, only four of them. But I read those very, very carefully.