What is a rebel? A man who says no. 

The fine arts once divorcing themselves from truth are quite certain to fall mad, if they do not die.

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.

Ideas are refined and multiplied in the commerce of minds. In their splendor, images effect a very simple communion of souls.

He dies twice who perishes by his own hand.

It is not enough to be industrious; so are the ants. What are you industrious about?

The highest compact we can make with our fellow, is, - "Let there be truth between us two forevermore".

We should always speak what would please the man of whom we expect a favour, like the hunter who sings sweetly when he desires to shoot a deer.

To travel is to discover that everyone is wrong.

Do you think that God will punish them for not practicing a religion which he did not reveal to them?

Freedom of thought and of expression are not mere rights to be claimed. They have their roots deep in the existence of individuals as developing careers in time. Their denial and abrogation is an abdication of individuality and a virtual rejection of time as opportunity.

The more cunning a man is, the less he suspects that he will be caught in a simple thing. The more cunning a man is, the simpler the trap he must be caught in.

Concern for the symbol has completely disappeared from our science. And yet, if one were to give oneself the trouble, one could easily find, in certain parts at least of contemporary mathematics... symbols as clear, as beautiful, and as full of spiritual meaning as that of the circle and mediation. From modern thought to ancient wisdom the path would be short and direct, if one cared to take it.

The judgment that human life is worth living, or rather can and ought to be made worth living, ... underlies all intellectual effort; it is the a priori of social theory, and its rejection (which is perfectly logical) rejects theory itself.

I want to proclaim a truth that would forever exile me from among the living. I know only the conditions but not the words that would allow me to formulate it.

But capitalist production begets,with the inexorability of a law of Nature,its own negation. It is the negation of negation.

It would be foolish to assert that there is no power above mine. Only the attitude that I take toward it will be quite another than that of the religious age: I shall be the enemy of every higher power, while religion teaches us to make it our friend and be humble toward it.

Wherever the want of clothing forced them to it, the human race made clothes for thousands of years, without a single man becoming a tailor.

But men must know that in this theater of man's life it is reserved only for God and angels to be lookers on.

It is better wither to be silent, or to say things of more value than silence. Sooner throw a pearl at hazard than an idle or useless word; and do not say a little in many words, but a great deal in a few.

Unbelievers (so called) as well as of believers, there are many species, including almost every variety of moral type. But the best among them, as no one who has had opportunities of really knowing them will hesitate to affirm (believers rarely have that opportunity), are more genuinely religious, in the best sense of the word religion, than those who exclusively arrogate to themselves the title.

Most of us, shrinking from the difficulties and dangers which beset the seeker after original answers to these riddles, are contented to ignore them altogether, or to smother the investigating spirit under the featherbed of respected and respectable tradition. But, in every age, one or two restless spirits, blessed with that constructive genius, which can only build on a secure foundation, or cursed with the mere spirit of scepticism, are unable to follow in the well-worn and comfortable track of their forefathers and contemporaries, and unmindful of thorns and stumbling-blocks, strike out into paths of their own.

We must admit, however, that neither wild beasts nor any other creature except man is subject to anger: for, whilst anger is the foe of reason, it nevertheless does not arise in any place where reason cannot dwell. Wild beasts have impulses, fury, cruelty, combativeness: they have not anger any more than they have luxury: yet they indulge in some pleasures with less self-control than human beings.

Wherever there is great property, there is great inequality.

If some great Power would agree to make me always think what is true and do what is right, on condition of being turned into a sort of clock and wound up every morning before I got out of bed, I should instantly close with the offer. The only freedom I care about is the freedom to do right; the freedom to do wrong I am ready to part with on the cheapest terms to any one who will take it of me.

Pleasure is in itself a good; nay, even setting aside immunity from pain, the only good: pain is in itself an evil; and, indeed, without exception, the only evil; or else the words good and evil have no meaning. And this is alike true of every sort of pain, and of every sort of pleasure.

Whereas the particular conception of ideology designates only a part of the opponent's assertions as ideologies - and this only with reference to their content, the total conception calls into question the opponent's total Weltanschauung (including his conceptual apparatus), and attempts to understand these concepts as an outgrowth of the collective life of which he partakes.

Ambition is the death of thought.

Rousseau's writings are so admirably adapted to touch both these classes that the effect they produced, especially in France, is easily intelligible.

Opinions differ as to the reasons why he became the futile laborer of the underworld. To begin with, he is accused of a certain levity in regard to the gods. He stole their secrets.

A free man must be able to endure it when his fellow men act and live otherwise than he considers proper. He must free himself from the habit, just as soon as something does not please him, of calling for the police.

Dear youths, I warn you cherish peace divine, And in your hearts lay deep these words of mine.

The utmost possible regarding an individual is a statement as to some order of probability about the future. Heisenberg's principle has been seized upon as a basis for wild statements to the effect that the doctrine of arbitrary free will and totally uncaused activity are now scientifically substantiated. Its actual force and significance is generalization of the idea that the individual is a temporal career whose future cannot logically be deduced from its past.

I do not overlook the fact that there are irrationalists who love mankind, and that not all forms of irrationalism engender criminality. But I hold that he who teaches that not reason but love should rule opens up the way for those who rule by hate. (Socrates, I believe, saw something of this when he suggested that mistrust or hatred of argument is related to mistrust or hatred of man).

All the excesses, all the violence, and all the vanity of great men, come from the fact that they know not what they are: it being difficult for those who regard themselves at heart as equal with all men... For this it is necessary for one to forget himself, and to believe that he has some real excellence above them, in which consists this illusion that I am endeavoring to discover to you.

As to riots and tumults, let those answer for them, who, by willful misrepresentations, endeavor to excite and promote them; or who seek to stun the sense of the nation, and to lose the great cause of public good in the outrages of a misinformed mob. We take our ground on principles that require no such riotous aid. We have nothing to apprehend from the poor; for we are pleading their cause. And we fear not proud oppression, for we have truth on our side.

I hold in fact(1) That small portions of space are in fact of a nature analogous to little hills on a surface which is on the average flat; namely, that the ordinary laws of geometry are not valid in them.(2) That this property of being curved or distorted is continually being passed on from one portion of space to another after the manner of a wave.(3) That this variation of the curvature of space is what really happens in that phenomenon which we call the motion of matter, whether ponderable or etherial.(4) That in the physical world nothing else takes place but this variation, subject possibly to the law of continuity.

An intuitionist conception of justice is, one might say, but half a conception.

Second, we make no distinction between man and nature: the human essence of nature and the natural essence of man become one within nature in the form of production or industry, just as they do within the life of man as a species. Industry is then no longer considered from the extrinsic point of view of utility, but rather from the point of view of its fundamental identity with nature as production of man and by man.

It seems to me obvious that infants and many animals that do not in any ordinary sense have a language or perform speech acts nonetheless have Intentional states. Only someone in the grip of a philosophical theory would deny that small babies can literally be said to want milk and that dogs want to be let out or believe that their master is at the door.

I never will, by any word or act, bow to the shrine of intolerance, or admit a right of inquiry into the religious opinions of others.

I disbelieve in specialization and... experts. ...[P]aying too much respect to the specialist ...[is] destroying the commonwealth of learning, the rationalist tradition, and science ...

Maybe suffering has no more justification than life.

The latest Gospel in this world is, Know thy work and do it. 'Know thyself:' long enough has that poor 'self' of thine tormented thee; thou wilt never get to 'know' it, I believe! Think it not thy business, this of knowing thyself; thou art an unknowable individual: know what thou canst work at; and work at it, like a Hercules! That will be thy better plan.

The point, as Marx saw it, is that dreams never come true.

As if to demonstrate, by a striking example, the impossibility of erecting any cerebral barrier between man and the apes, Nature has provided us, in the latter animals, with an almost complete series of gradations from brains little higher than that of a Rodent, to brains little lower than that of Man.

Impossible to accede to truth by opinions, for each opinion is only a mad perspective of reality.

When you read God's Word, in everything you read, continually to say to yourself: It is I to whom it is speaking - this is earnestness, precisely this is earnestness. Not a single one of those to whom the cause of Christianity in the higher sense has been entrusted forgot to urge this again and again as most crucial, as unconditionally the condition if you are to come to see yourself in the mirror.

Even opinion is of force enough to make itself to be espoused at the expense of life.