A robot may not injure a human being, or, through inaction, allow a human being to come to harm.

Gutenberg made all history available as classified data: the transportable book brought the world of the dead into the space of the gentlemen's library; the telegraph brought the entire world of the living to the workman's breakfast table.

Stars and blossoming fruit-trees: utter permanence and extreme fragility give an equal sense of eternity.

The most disadvantageous peace is better than the most just war.

The State's behavior is violence, and it calls its violence "law"; that of the individual, "crime." The state calls its own violence law, but that of the individual, crime.

If the world is a precipitation of human nature, so to speak, then the divine world is a sublimation of the same. Both occur in one act. No precipitation without sublimation. What goes lost there in agility, is won here.

If you would convince a man that he does wrong, do right. But do not care to convince him. Men will believe what they see.

Children are nowhere taught, in any systematic way, to distinguish true from false, or meaningful from meaningless, statements. Why is this so? Because their elders, even in the democratic countries, do not want them to be given this kind of education.

The Republican form of government is the highest form of government; but because of this it requires the highest type of human nature - a type nowhere at present existing.

You may set the Negro free, but you cannot make him otherwise than an alien to the European. Nor is this all we scarcely acknowledge the common features of humanity in this stranger whom slavery has brought among us. His physiognomy is to our eyes hideous, his understanding weak, his tastes low; and we are almost inclined to look upon him as a being intermediate between man and the brutes.

The ideal of strictly scientific method in mathematics which I have tried to realise here, and which perhaps might be named after Euclid I should like to describe in the following way... The novelty of this book does not lie in the content of the theorems but in the development of the proofs and the foundations on which they are based... With this book I accomplish an object which I had in view in my Begriffsschrift of 1879 and which I announced in my Grundlagen der Arithmetik. I am here trying to prove the opinion on the concept of number that I expressed in the book last mentioned.

Missionaries, whether of philosophy or of religion, rarely make rapid way, unless their preachings fall in with the prepossessions of the multitude of shallow thinkers, or can be made to serve as a stalking-horse for the promotion of the practical aims of the still larger multitude, who do not profess to think much, but are quite certain they want a great deal.

Everything that depends on the action of nature is by nature as good as it can be, and similarly everything that depends on art or any rational cause, and especially if it depends on the best of all causes. To entrust to chance what is greatest and most noble would be a very defective arrangement.

This is still the strangest thing in all man's travelling, that he should carry about with him incongruous memories.

The successful scientist and the raving crank are separated by the quality of their inspirations. But I suspect that this amounts, in practice, to a difference, not so much in ability to notice analogies as in ability to reject foolish analogies and pursue helpful ones.

The class of the wholly propertyless, who are obliged to sell their labor to the bourgeoisie in order to get, in exchange, the means of subsistence for their support. This is called the class of proletarians, or the proletariat.

Do you suppose that you can do the things you do now, and yet be a philosopher? Do you suppose that you can eat in the same fashion, drink in the same fashion, give way to anger and to irritation, just as you do now?

Can there be a more horrible object in existence than an eloquent man not speaking the truth?

Money is a crystal formed of necessity in the course of the exchanges, whereby different products of labour are practically equated to one another and thus by practice converted into commodities.

We believe we are rising because while keeping the same base inclinations (for instance: the desire to triumph over others) we have given them a noble object. We should, on the contrary, rise by attaching noble inclinations to lowly objects.

Cities are, first of all, seats of the highest economic division of labor. They produce thereby such extreme phenomena as in Paris the remunerative occupation of the quatorzième. They are persons who identify themselves by signs on their residences and who are ready at the dinner hour in correct attire, so that they can be quickly called upon if a dinner party should consist of thirteen persons. In the measure of its expansion, the city offers more and more the decisive conditions of the division of labor. It offers a circle which through its size can absorb a highly diverse variety of services.

The man who hopes for naught at least has naught to fear.

There must be something solemn, serious, and tender about any attitude which we denominate religious. If glad, it must not grin or snicker; if sad, it must not scream or curse. It is precisely as being solemn experiences that I wish to interest you in religious experiences. ... The divine shall mean for us only such a primal reality as the individual feels impelled to respond to solemnly and gravely, and neither by a curse nor a jest.

The State is always, whatever be its form - primitive, ancient, medieval, modern - an invitation issued by one group of men to other human groups to carry out some enterprise in common. That enterprise, be its intermediate processes what they may, consists in the long run in the organisation of a certain type of common life. ... [As Renan says,] "To have common glories in the past, a common will in the present; to have done great things together; to wish to do greater; these are the essential conditions which make up a people.... In the past, an inheritance of glories and regrets; in the future, one and the same programme to carry out.... The existence of a nation is a daily plebiscite."

Gaiety - a quality of ordinary men. Genius always presupposes some disorder in the machine.

It is difficult to speak of the universal specifically.

With prophecies the commentator is often a more important man than the prophet.

If you look at the graph of the growth of G.M.O.s, the growth of application of glyphosate and autism, it's literally a one-to-one correspondence. And you could make that graph for kidney failure, you could make that graph for diabetes, you could make that graph even for Alzheimer's.

When the husk gets separated from the kernel, almost all men run after the husk and pay their respects to that. It is only the husk of Christianity that is so bruited and wide spread in this world; the kernel is still the very least and rarest of all things. There is not a single church founded on it.

To all men it is evident that the social interests of one hundred and fifty Millions of us depend on the mysterious industry there carried on; and likewise that the dissatisfaction with it is great, universal, and continually increasing in intensity,-in fact, mounting, we might say, to the pitch of settled despair.

A solitary man is a God, or a beast.

The problem is one of opposition between subjective and objective points of view. There is a tendency to seek an objective account of everything before admitting its reality. But often what appears to a more subjective point of view cannot be accounted for in this way. So either the objective conception of the world is incomplete, or the subjective involves illusions that should be rejected.

Life is that which is discontent, which struggles and seeks, which suffers and creates.

In their nomination to office they will not appoint to the exercise of authority as to a pitiful job, but as to a holy function.

To choose this or that is to affirm at the same time the value of what we choose, because we can never choose evil. We always choose the good, and nothing can be good for us without being good for all.

No difference of rank, position, or birth, is so great as the gulf that separates the countless millions who use their head only in the service of their belly, in other words, look upon it as an instrument of the will, and those very few and rare persons who have the courage to say: No! my head is too good for that; it shall be active only in its own service; it shall try to comprehend the wondrous and varied spectacle of this world and then reproduce it in some form, whether as art or as literature, that may answer to my character as an individual.

We used to pay too little attention to utopias, or even disregard them altogether, saying with regret they were impossible of realisation. Now indeed they seem to be able to be brought about far more easily than we supposed, and we are actually faced by an agonising problem of quite another kind: how can we prevent their final realisation? ... Utopias are more realisable than those 'realist politics' that are only the carefully calculated policies of office-holders, and towards utopias we are moving. But it is possible that a new age is already beginning, in which cultured and intelligent people will dream of ways to avoid ideal states and to get back to a society that is less 'perfect' and more free.

The stars are scattered all over the sky like shimmering tears, there must be great pain in the eye from which they trickled.

Though we may prefer ourselves to the universe, we nonetheless loathe ourselves much more than we suspect. If the wise man is so rare a phenomenon, it is because he seems unshaken by the aversion which, like all beings, he must feel for himself.

People almost invariably arrive at their beliefs not on the basis of proof but on the basis of what they find attractive.

There is a great difference between the Idols of the human mind and the Ideas of the divine. That is to say, between certain empty dogmas, and the true signatures and marks set upon the works of creation as they are found in nature.

No one is ignorant that there are two avenues by which opinions are received into the soul, which are its two principal powers: the understanding and the will.

I am a dreamer of words, of written words. I think I am reading; a word stops me. I leave the page. The syllables of the word begin to move around. Stressed accents begin to invert. The word abandons its meaning like an overload which is too heavy and prevents dreaming. Then words take on other meanings as if they had the right to be young. And the words wander away, looking in the nooks and crannies of vocabulary for new company, bad company.

If conquest constitutes a natural right on the part of the few, the many have only to gather sufficient strength in order to acquire the natural right of reconquering what has been taken from them.

But more correctly: The fact that I use the word "hand" and all the other words in my sentence without a second thought, indeed that I should stand before the abyss if I wanted so much as to try doubting their meanings - shows that absence of doubt belongs to the essence of the language-game, that the question "How do I know..." drags out the language-game, or else does away with it.

The pursuit of philosophy is founded on the belief that knowledge is good, even if what is known is painful. A man imbued with the philosophic spirit, whether a professional philosopher or not, will wish his beliefs to be as true as he can make them, and will, in equal measure, love to know and hate to be in error. This principle has a wider scope than may be apparent at first sight.

The system of technological production that we have today has been justified in terms of creating more goods to feed more people and to meet more needs. But it actually destroys more of the resources that we need in order to meet those multiple needs. If we shift to an ecological perception, a diversity perception, we realize that some of the instruments of which we are very proud are actually extremely primitive for dealing with nature. To me that is the great lesson of ecological awareness at the turn of the millennium.

Science must begin with myths, and with the criticism of myths.

From the power to transform him into a thing by killing him there proceeds another power, and much more prodigious, that which makes a thing of him while he still lives.