Psychologists have hitherto failed to realize that imagination is a necessary ingredient of perception itself.

The principle of utility judges any action to be right by the tendency it appears to have to augment or diminish the happiness of the party whose interests are in question... if that party be the community the happiness of the community, if a particular individual, the happiness of that individual.

I do wish I believed in the life eternal, for it makes me quite miserable to think man is merely a kind of machine endowed, unhappily for himself, with consciousness.

To travel is to discover that everyone is wrong.

It is impossible for any man, when the most favourable circumstances concur, to acquire sufficient knowledge and strength of mind to discharge the duties of a king, entrusted with uncontrolled power; how then must they be violated when his very elevation is an insuperable bar to the attainment of either wisdom or virtue; when all the feelings of a man are stifled by flattery, and reflection shut out by pleasure! Surely it is madness to make the fate of thousands depend on the caprice of a weak fellow creature, whose very station sinks him NECESSARILY below the meanest of his subjects! But one power should not be thrown down to exalt another--for all power intoxicates weak man; and its abuse proves, that the more equality there is established among men, the more virtue and happiness will reign in society.

That immense framework and planking of concepts to which the needy man clings his whole life long in order to preserve himself is nothing but a scaffolding and toy for the most audacious feats of the liberated intellect. And when it smashes this framework to pieces, throws it into confusion, and puts it back together in an ironic fashion, pairing the most alien things and separating the closest, it is demonstrating that it has no need of these makeshifts of indigence and that it will now be guided by intuitions rather than by concepts. There is no regular path which leads from these intuitions into the land of ghostly schemata, the land of abstractions. There exists no word for these intuitions; when man sees them he grows dumb, or else he speaks only in forbidden metaphors and in unheard of combinations of concepts. He does this so that by shattering and mocking the old conceptual barriers he may at least correspond creatively to the impression of the powerful present intuition.

God cannot give us a happiness and peace apart from Himself, because it is not there. There is no such thing.

Another force driving progressive evolution is the so-called "arms-race." Prey animals evolve faster running speeds because predators do. Consequently predators have to evolve even faster running speeds, and so on, in an escalating spiral. Such arms races probably account for the spectacularly advanced engineering of eyes, ears, brains, bat "radar" and all the other high-tech weaponry that animals display.

Life has a value only when it has something valuable as its object.

As iron is eaten away by rust, so the envious are consumed by their own passion.

A science that observes the laws of causation, and so is value-free, threatens human freedom and man's religious, ethical, and legal responsibility. The philosophy of values raised to that challenge, in the sense that it opposed a sphere of values, as a realm of ideal valuations, to a sphere of being that was only causally understood. It was an attempt to assert the human being as a free, responsible creature, indeed not in itself, but at least, in its valuation, what one called value. That attempt was put forth as a positivistic substitute for the metaphysical.

What strikes one here above all is the crudely empirical conception of profit derived from the outlook of the ordinary capitalist, which wholly contradicts the better esoteric understanding of Adam Smith.

When a person inflates his own importance, he does not see his own sins; and his sins get bigger right along with him.

The world is nothing, the man is all; in yourself is the law of all nature, and you know not yet how a globule of sap ascends; in yourself slumbers the whole of Reason; it is for you to know all, it is for you to dare all.

The establishment of any new manufacture, of any new branch of commerce, or any new practice in agriculture, is always a speculation, from which the projector promises himself extraordinary profits. These profits sometimes are very great, and sometimes, more frequently, perhaps, they are quite otherwise; but in general they bear no regular proportion to those of other older trades in the neighbourhood. If the project succeeds, they are commonly at first very high. When the trade or practice becomes thoroughly established and well known, the competition reduces them to the level of other trades.

Before making a decision the first thing to do - don't get worked up. For everything happens according to the nature of all things, and in a short time you'll be nobody and nowhere even as the great emperors Hadrian and Augustus are now. The next thing to do - consider carefully the task at hand for what it is, while remembering that your purpose is to be a good human being. Get straight to doing what nature requires of you, and speak as you see most just and fitting - with kindness, modesty, and sincerity.

He was breakfasting in the marketplace, and the bystanders gathered round him with cries of "dog." "It is you who are dogs," cried he, "when you stand round and watch me at my breakfast."

To prove cannot mean anything other than to bring the other person to my own conviction. The truth lies only in the unification of "I" and "You." The Other of pure thought, however, is the sensuous intellect in general. In the field of philosophy, proof therefore consists only in the fact that the contradiction between sensuous intellect and pure thought is disposed, so that thought is true not only for itself but also for its opposite.

Yes, I know well that others before me have felt what I feel and express; that many others feel it today, although they keep silence about it. ...And I do not keep silence about it because it is for many the thing which must not be spoken, the abomination of abominations - infandum - and I believe that it is necessary now and again to speak the thing which must not be spoken. ...Even if it should lead only to irritating the devotees of progress, those who believe that truth is consolation, it would lead to not a little. To irritating them and making them say: "Poor fellow! if he would only use his intelligence to better purpose!... Someone perhaps will add that I do not know what I say, to which I shall reply that perhaps he may be right - and being right is such a little thing! - but that I feel what I say and I know what I feel and that suffices me. And that it is better to be lacking in reason than to have too much of it.

We do not require elaborate training merely in order to refrain from embarking upon intricate trains of inference. Such abstinence is only too easy.

Nothing is quite so wretchedly corrupt as an aristocracy which has lost its power but kept its wealth and which still has endless leisure to devote to nothing but banal enjoyments. All its great thoughts and passionate energy are things of the past, and nothing but a host of petty, gnawing vices now cling to it like worms to a corpse.

The victory of vivisection marks a great advance in the triumph of ruthless, non-moral utilitarianism over the old world of ethical law; a triumph in which we, as well as animals, are already the victims, and of which Dachau and Hiroshima mark the more recent achievements.

If compelled to indicate my religion on an immigration blank, I might be tempted to put down the word "Taoist," to the amazement of the customs officer who probably never heard of it.

Whatever moral rules you have deliberately proposed to yourself abide by them as they were laws, and as if you would be guilty of impiety by violating any of them. Don't regard what anyone says of you, for this, after all, is no concern of yours. How long, then, will you put off thinking yourself worthy of the highest improvements and follow the distinctions of reason? You have received the philosophical theorems, with which you ought to be familiar, and you have been familiar with them. What other master, then, do you wait for, to throw upon that the delay of reforming yourself?... Let whatever appears to be the best be to you an inviolable law.

The rudest heathen that worshipped Canopus, or the Caabah Black-Stone, he, as we saw, was superior to the horse that worshipped nothing at all! Nay there was a kind of lasting merit in that poor act of his; analogous to what is still meritorious in Poets: recognition of a certain endless divine beauty and significance in stars and all natural objects whatsoever.

Remember, however, before all else, to strip things of all that disturbs and confuses, and to see what each is at bottom; you will then comprehend that they contain nothing fearful except the actual fear.

Deception, flattering, lying, deluding, talking behind the back, putting up a false front, living in borrowed splendor, wearing a mask, hiding behind convention, playing a role for others and for oneself, in short, a continuous fluttering around the solitary flame of vanity is so much the rule and the law among men that there is almost nothing which is less comprehensible than how an honest and pure drive for truth could have arisen among them. They are deeply immersed in illusions and in dream images; their eyes merely glide over the surface of things and see "forms." Variant translation: The constant fluttering around the single flame of vanity is so much the rule and the law that almost nothing is more incomprehensible than how an honest and pure urge for truth could make its appearance among men.

And these were the dishes wherein to me, hunger-starven for thee, they served up the sun and the moon.

Be quiet! Anyone can spit in my face, and call me a criminal and a prostitute. But no one has the right to judge my remorse.

I am not virtuous. Our sons will be if we shed enough blood to give them the right to be.

To all Christian governments Christianity was not a rule of means but a means of rule; Christ was for the people, Machiavelli was preferred by the kings. The state in some measure had civilized man, but who would civilize the state?

Those who purge the soul believe that the soul can receive no benefit from any teachings offered to it until someone by cross-questioning reduces him who is cross-questioned to an attitude of modesty, by removing the opinions that obstruct the teachings, and thus purges him and makes him think that he knows only what he knows, and no more.

Whoever has overthrown an existing law of custom has hitherto always first been accounted a bad man: but when, as did happen, the law could not afterwards be reinstated and this fact was accepted, the predicate gradually changed: - history treats almost exclusively of these bad men who subsequently became good men!

Only now, as we feel the onslaught behind us, do we begin dimly to apprehend why the animals fought, begot, and died; and behind them the plants; and behind these the huge reserve of inorganic forces. We are moved by pity, gratitude, and esteem for our old comrades-in-arms. They toiled, loved, and died to open a road for our coming. We also toil with the same delight, agony, and exaltation for the sake of Someone Else who with every courageous deed of ours proceeds one step farther. All our struggle once more will have a purpose much greater than we, wherein our toils, our miseries, and our crimes will have become useful and holy.

Young man, there is America - which at this day serves for little more than to amuse you with stories of savage men and uncouth manners; yet shall, before you taste of death, show itself equal to the whole of that commerce which now attracts the envy of the world.

Whenever you suffer pain, keep in mind that it's nothing to be ashamed of and that it can't degrade your guiding intelligence, nor keep it from acting rationally and for the common good. And in most cases you should be helped by the saying of Epicurus, that pain is never unbearable or unending, so you can remember these limits and not add to them in your imagination. Remember too that many common annoyances are pain in disguise, such as sleepiness, fever and loss of appetite. When they start to get you down, tell yourself you are giving in to pain.

The worst is not ennui nor despair but their encounter, their collision. To be crushed between the two!

We need better government, no doubt about it. But we also need better minds, better friendships, better marriages, better communities.

He would be the finer gentleman that should leave the world without having tasted of lying or pretence of any sort, or of wantonness or conceit.

Art thy not content that thou hast done something conformable to thy nature, and dost thou seek to be paid for it? Just as if the eye demanded recompense for seeing, or the feet for walking. For as these members are formed for a particular purpose... so also is man formed by nature to acts of benevolence.

A reproach can only hurt if it hits the mark. Whoever knows that he does not deserve a reproach can treat it with contempt.

The philosophy of physics is continuous with physics itself. Just as certain issues in the Foundations of Mathematics have been discussed by both mathematicians and by philosophers of mathematics, so certain issues in the philosophy of physics have been discussed by both physicists and by philosophers of physics. And just as there are issues of a more epistemological kind that tend to concern philosophers of mathematics more than they do working mathematicians, so there are issues that concern philosophers of physics more than they do working physicists.

Enter by the narrow gate; for wide is the gate and broad is the way that leads to destruction, and there are many who go in by it. Because narrow is the gate and difficult is the way which leads to life, and there are few who find it.

It's almost impossible to say anything against Islam in this country, because you are accused of being racist or Islamophobic.

Even the eye that is artificially trained to see color as color, apart from things that colors qualify, cannot shut out the resonances and transfers of value.

Law and arbitrary power are in eternal enmity. Name me a magistrate, and I will name property; name me power, and I will name protection. It is a contradiction in terms, it is blasphemy in religion, it is wickedness in politics, to say that any man can have arbitrary power. In every patent of office the duty is included. For what else does a magistrate exist? To suppose for power is an absurdity in idea. Judges are guided and governed by the eternal laws of justice, to which we are all subject. We may bite our chains, if we will, but we shall be made to know ourselves, and be taught that man is born to be governed by law; and he that will substitute will in the place of it is an enemy to God.

I am not bound over to swear allegiance to any master; where the storm drives me I turn in for shelter.

My purpose here is to denounce an idea which seems to be dangerous and false. ... Revolutionary trade unionists and orthodox communists are at one in considering everything that is purely theoretical as bourgeois. ... The culture of a socialist society would be a synthesis of theory and practice; but to synthesize is not the same as to confuse together; it is only contraries that can be synthesized. ... Marx's principal glory is to have rescued the study of societies not only from Utopianism but also and at the same time from empiricism. ... Humanity cannot progress by importing into theoretical study the processes of blind routine and haphazard experiment by which production has so long been dominated. ... The true relation between theory and application only appears when theoretical research has been purged of all empiricism.

Whoever finishes a revolution only halfway, digs his own grave.