I'm very proud that some people think that I'm a danger for the intellectual health of students. When people start thinking of health in intellectual activities, I think there is something wrong. In their opinion I am a dangerous man, since I am a crypto-Marxist, an irrationalist, a nihilist.

I wish to propose for the reader's favourable consideration a doctrine which may, I fear, appear wildly paradoxical and subversive. The doctrine in question is this: that it is undesirable to believe a proposition when there is no ground whatever for supposing it true.

Experience teaches only the teachable...

The concept of space, therefore, is a pure intuition, being a singular concept, not made up by sensations, but itself the fundamental form of all external sensation.

Let a man once overcome his selfish terror at his own finitude, and his finitude is, in one sense, overcome.

All the seemingly positive valuations and judgments of ressentiment are hidden devaluations and negations.

Superstition sets the whole world in flames; philosophy quenches them.

Imagination, which is the social sense, animates the inanimate and anthropomorphizes everything; it humanizes everything and even makes everything identical with man. And the work of man is to supernaturalize Nature - that is to say, to make it divine by making it human, to help it to become conscious of itself, in short. The action of reason, on the other hand, is to mechanize or materialize.

I believe that the nature of man is a contradiction rooted in the conditions of human existence that requires a search for solutions, which in their turn create new contradictions and now the need for answers. I believe that every answer to these contradictions can really satisfy the condition of helping man to overcome the sense of separation and to achieve a sense of agreement, of unity, and of belonging. I believe that in every answer to these contradictions, man has the possibility of choosing only between going forward or going back; these choices, which are translated into specific actions, are means toward the regressing or toward the progressing of the humanity that is in us.

Before we as individuals are even conscious of our existence we have been profoundly influenced for a considerable time (since before birth) by our relationship to other individuals who have complicated histories, and are members of a society which has an infinitely more complicated and longer history than they do (and are members of it at a particular time and place in that history); and by the time we are able to make conscious choices we are already making use of categories in a language which has reached a particular degree of development through the lives of countless generations of human beings before us. . . . We are social creatures to the inmost centre of our being. The notion that one can begin anything at all from scratch, free from the past, or unindebted to others, could not conceivably be more wrong.

Jesus answered: "Believe me, Barnabas that I cannot weep as much as I ought. For if men had not called me God, I should have seen God here as he will be seen in paradise, and should have been safe not to fear the day of judgment. But God knows that I am innocent, because never have I harboured thought to be held more than a poor slave. No, I tell you that if I had not been called God I should have been carried into paradise when I shall depart from the world, whereas now I shall not go thither until the judgment. Now you see if I have cause to weep."

You have heard that it was said, "Eye for eye, and tooth for tooth." But I tell you, do not resist an evil person. If someone strikes you on the right cheek, turn to him the other also. And if someone wants to sue you and take your tunic, let him have your cloak as well. If someone forces you to go one mile, go with him two miles.

Fortunate those who, born before science, were privileged to die of their first disease!

Even a statement very close to the periphery can be held true in the face of recalcitrant experience by pleading hallucination or by amending certain statements of the kind called logical laws. Conversely, by the same token, no statement is immune to revision. Revision even of the logical law of the excluded middle has been proposed as a means of simplifying quantum mechanics; and what difference is there in principle between such a shift and the shift whereby Kepler superseded Ptolemy, or Einstein Newton, or Darwin Aristotle?

She believed in nothing; only her skepticism kept her from being an atheist.

I see the situation of man in the world of planetary technicity not as an inexitricable and inescapable destiny, but I see the task of thought precisely in this, that within its own limits it helps man as such achieve a satisfactory relationship to the essence of technicity. National Socialism did indeed go in this direction. Those people, however, were far too poorly equipped for thought to arrive at a really explicit relationship to what is happening today and has been underway for the past 300 years.

The dominion of bad men is hurtful chiefly to themselves who rule, for they destroy their own souls by greater license in wickedness; while those who are put under them in service are not hurt except by their own iniquity. For to the just all the evils imposed on them by unjust rulers are not the punishment of crime, but the test of virtue. Therefore the good man, although he is a slave, is free; but the bad man, even if he reigns, is a slave, and that not of one man, but, what is far more grievous, of as many masters as he has vices; of which vices when the divine Scripture treats, it says, For of whom any man is overcome, to the same he is also the bond-slave.

Every uneducated person is a caricature of himself.

I am not a visual person. I have spent so many bounded years in my childhood that I have grown used to having books as my window on reality.

Out of my experience, such as it is (and it is limited enough) one fixed conclusion dogmatically emerges, and that is this, that we with our lives are like islands in the sea, or like trees in the forest. The maple and the pine may whisper to each other with their leaves. ... But the trees also commingle their roots in the darkness underground, and the islands also hang together through the ocean's bottom. Just so there is a continuum of cosmic consciousness, against which our individuality builds but accidental fences, and into which our several minds plunge as into a mother-sea or reservoir.

Fine words and an insinuating appearance are seldom associated with true virtue. 

Since the only things we remember are humiliations and defeats, what is the use of all the rest?

If there is anything that we wish to change in the child, we should first examine it and see whether it is not something that could better be changed in ourselves.

Clichés, stock phrases, adherence to conventional, standardized codes of expression and conduct have the socially recognized function of protecting us against reality.

To these spurious principles must be added some others of great affinity with them... First, that by which we assume that everything in the universe is done according to the order of nature, which principle by Epicurus was proclaimed without any restriction, and by all other philosophers unanimously with extremely rare exceptions, not to be admitted but from supreme necessity.

Let us not forget what befits our present state in the pursuit of vain fancies. Mankind has its place in the sequence of things; childhood has its place in the sequence of human life; the man must be treated as a man and the child as a child. Give each his place, and keep him there. Control human passions according to man's nature; that is all we can do for his welfare. The rest depends on external forces, which are beyond our control.

The machine is only a tool after all, which can help humanity progress faster by taking some of the burdens of calculations and interpretations off its back. The task of the human brain remains what it has always been; that of discovering new data to be analyzed, and of devising new concepts to be tested.

There is no more miserable human being than one in whom nothing is habitual but indecision.

Égalité is an expression of envy. It means, in the real heart of every Republican, " No one shall be better off than I am;" and while this is preferred to good government, good government is impossible.

I can be twenty women, one hundred, if that's what you want, all women. Ride with me behind you, I weigh nothing, your horse will not feel me. I want to be your whorehouse!

All those to whom I looked up, were of opinion that the pleasure of sympathy with human beings, and the feelings which made the good of others, and especially of mankind on a large scale, the object of existence, were the greatest and surest sources of happiness. Of the truth of this I was convinced, but to know that a feeling would make me happy if I had it, did not give me the feeling.

Primitive superstition lies just below the surface of even the most tough-minded individuals, and it is precisely those who most fight against it who are the first to succumb to its suggestive effects.

I have often seen an actor laugh off the stage, but I don't remember ever having seen one weep.

The discourse on the Text should itself be nothing other than text, research, textual activity, since the Text is that social space which leaves no language safe, outside, nor any subject of the enunciation in position as judge, master, analyst, confessor, decoder. The theory of the Text can coincide only with a practice of writing.

Daughters of Time, the hypocritic Days, Muffled and dumb like barefoot dervishes, And marching single in an endless file, Bring diadems and fagots in their hands.

The weakness of little children's limbs is innocent, not their souls.

Superstition, idolatry, and hypocrisy have ample wages, but truth goes a-begging.

A free man thinks of death least of all things; and his wisdom is a meditation not of death but of life.

The society adopts neither rites nor priesthood, and it will never lose sight of the resolution not to advance any thing as a society inconvenient to any sect or sects, in any time or country, and under any government. It will be seen that it is so much the more easy for the society to keep within this circle, because, that the dogmas of the Theophilanthropists are those upon which all the sects have agreed, that their moral is.that upon which there has never been the least dissent; and that the name they have taken expresses the double end of all the sects, that of leading to the adoration of God and love of man.

Life has always seemed to me like a plant that lives on its rhizome. Its true life is invisible, hidden in the rhizome. The part that appears above ground lasts only a single summer. What we see is the blossom, which passes. The rhizome remains. Closing lines of the preface

There is no work so mean, but it would amply serve me to furnish me with sustenance.

If nature has been frugal in her gifts and endowments, there is the more need of art to supply her defects. If she has been generous and liberal, know that she still expects industry and application on our part, and revenges herself in proportion to our negligent ingratitude. The richest genius, like the most fertile soil, when uncultivated, shoots up into the rankest weeds; and instead of vines and olives for the pleasure and use of man, produces, to its slothful owner, the most abundant crop of poisons.

My life has been full of terrible misfortunes most of which never happened.

This, I feel, is missing a vital point: that the sceptic is often a totally honest person who, for perfectly good, sound reasons, simply cannot see a case for belief. In fact many -- like Courty Bryan -- admit that they would like to be convinced, but find it impossible.

All sentiment is right; because sentiment has a reference to nothing beyond itself, and is always real, wherever a man is conscious of it. But all determinations of the understanding are not right; because they have a reference to something beyond themselves, to wit, real matter of fact; and are not always conformable to that standard.

An honest man nearly always thinks justly.

All that is solid melts into air, all that is holy is profaned, and man is at last compelled to face with sober senses, his real conditions of life, and his relations with his kind.

The world must be romanticized. In this way the originary meaning may be found again. As

Ah, Postumus! they fleet away, our years, nor piety one hour can win from wrinkles and decay, and Death's indomitable power.

We should have with each person the relationship of one conception of the universe to another conception of the universe, and not to a part of the universe.