Normal science, the puzzle-solving activity we have just examined, is a highly cumulative enterprise, eminently successful in its aim, the steady extension of the scope and precision of scientific knowledge. In all these respects it fits with great precision the most usual image of scientific work. Yet one standard product of the scientific enterprise is missing. Normal science does not aim at novelties of fact or theory and, when successful, finds none.

Philosophy ... must not bargain away anything of the emphatic concept of truth.

Though the coming of the day is still the most inspiriting, yet day's departure, also, and the return of night refresh, renew, and quiet us; and in the pastures of the dusk we stand, like cattle, exulting in the absence of the load.

Giving alms is only a virtuous deed when you give money that you yourself worked to get.

It is the peculiarity of privilege and of every privileged position to kill the intellect and heart of man. The privileged man, whether he be privileged politically or economically, is a man depraved in intellect and heart.

Happiness is the indication that man has found the answer to the problem of human existence: the productive realization of his potentialities and thus, simultaneously, being one with the world and preserving the integrity of his self. In spending his energy productively he increases his powers, he "burns without being consumed."

There was never a time when the world began, because it goes round and round like a circle, and there is no place on a circle where it begins. Look at my watch, which tells the time; it goes round, and so the world repeats itself again and again. But just as the hour-hand of the watch goes up to twelve and down to six, so, too, there is day and night, waking and sleeping, living and dying, summer and winter. You can't have any one of these without the other, because you wouldn't be able to know what black is unless you had seen it side-by-side with white, or white unless side-by-side with black.

There are two forms of knowledge, one genuine, one obscure. To the obscure belong all of the following: sight, hearing, smell, taste, feeling. The other form is the genuine, and is quite distinct from this. [And then distinguishing the genuine from the obscure, he continues:] Whenever the obscure [way of knowing] has reached the minimum sensibile of hearing, smell, taste, and touch, and when the investigation must be carried farther into that which is still finer, then arises the genuine way of knowing, which has a finer organ of thought.

At the speed of light there is no sequence; everything happens at the same instant.

If throughout your life you abstain from murder, theft, fornication, perjury, blasphemy, and disrespect toward your parents, your church, and your king, you are conventionally held to deserve moral admiration even if you have never done a single kind or generous or useful action. This very inadequate notion of virtue is an outcome of taboo morality, and has done untold harm.

We die in proportion to the words we fling around us.

No matter how busy you may think you are, you must find time for reading, or surrender yourself to self-chosen ignorance.

Macaulay is like a book in breeches...He has occasional flashes of silence, that make his conversation perfectly delightful.

Every philosophy is complete in itself and, like a genuine work of art, contains the totality. Just as the works of Apelles and Sophocles, if Raphael and Shakespeare had known them, should not have appeared to them as mere preliminary exercises for their own work, but rather as a kindred force of the spirit, so, too reason cannot find in its own earlier forms mere useful preliminary exercises for itself.

Philosophy accepts the hard and hazardous task of dealing with problems not yet open to the methods of science - problems like good and evil, beauty and ugliness, order and freedom, life and death; so soon as a field of inquiry yields knowledge susceptible of exact formulation it is called science. Every science begins as philosophy and ends as art; it arises in hypothesis and flows into achievement.

Sentimentality, like pornography, is fragmented emotion; a natural consequence of a high visual gradient in any culture.

If a thousand citizens were not to pay their tax-bills this year, that would not be a violent and bloody measure, as it would be to pay them, and enable the State to commit violence and shed innocent blood. This is, in fact, the definition of a peaceable revolution, if any such is possible.

This life affords no solid satisfaction, but in the consciousness of having done well, and the hopes of another life.

Jesus said that God was not the God of the dead, but of the living. And the other life is not, in fact, thinkable to us except under the same forms as those of this earthly and transitory life.

We later learned that all the nineteen passengers in the non-smoking compartment had been killed. When the plane had hit the water a hole had been made in the plane and the water had rushed in. I had told a friend at Oslo who was finding me a place that he must find me a place where I could smoke, remarking jocularly, 'If I cannot smoke, I shall die'. Unexpectedly, this turned out to be true.

With stupidity and sound digestion man may front much.

The great fault of all ethics hitherto has been that they believed themselves to have to deal only with the relations of man to man. In reality, however, the question is what is his attitude to the world and all life that comes within his reach. A man is ethical only when life, as such, is sacred to him, and that of plants and animals as that of his fellow men, and when he devotes himself helpfully to all life that is in need of help. Only the universal ethic of the feeling of responsibility in an ever-widening sphere for all that lives - only that ethic can be founded in thought. ... The ethic of Reverence for Life, therefore, comprehends within itself everything that can be described as love, devotion, and sympathy whether in suffering, joy, or effort.

The heart unites whatever the mind separates, pushes on beyond the arena of necessity and transmutes the struggle into love.

Psychoanalysis will be entirely discredited one of these days, no doubt about it. Which will not keep it from destroying our last vestiges of naivete. After psychoanalysis, we can never again be innocent.

Those who are not shocked when they first come across quantum theory cannot possibly have understood it.

Reality is harsh to the feet of shadows.

Night is falling: at dusk, you must have good eyesight to be able to tell the Good Lord from the Devil.

I mistrust illuminations: what we take for a discovery is very often only a familiar thought that we have not recognized.

The animating purpose of James was, on the other hand, primarily moral and artistic. It is expressed in his phrase, "block universe," employed as a term of adverse criticism. Mechanism and idealism were abhorrent to him because they both hold to a closed universe in which there is no room for novelty and adventure. Both sacrifice individuality and all the values, moral and aesthetic, which hang upon individuality; for according to absolute idealism, as to mechanistic materialism, the individual is simply a part determined by the whole of which he is a part. Only a philosophy of pluralism, of genuine indetermination, and of change which is real and intrinsic gives significance to individuality. It alone justifies struggle in creative activity and gives opportunity for the emergence of the genuinely new.

Ideas are invented only as correctives to the past. Through repeated rectifications of this kind one may hope to disengage an idea that is valid.

Having always lived in fear of being surprised by the worst, I have tried in every circumstance to get a head start, flinging myself into misfortune long before it occurred.

Not merely in the realm of commerce but in the world of ideas as well our age is organizing a regular clearance sale. Everything is to be had at such a bargain that it is questionable whether in the end there is anybody who will want to bid. Every speculative price-fixer who conscientiously directs attention to the significant march of modern philosophy, every Privatdocent, tutor, and student, every crofter and cottar goes further. Perhaps it would be untimely and ill-timed to ask them where they are going.

Time passes quickly with lovers.

The irony of scientific progress is that in solving human problems it creates problems that are not humanly soluble. Science has given humans a kind of power over the natural world achieved by no other animal. It has not given humans the ability to remodel the planet according to their wishes. The Earth is not a clock that can be wound up and stopped at will. A living system, the planet will surely rebalance itself. It will do so, however, without any regard for humans.

The freedom of the 'everyday mind' consists rather in not kneeling down in awe. Its mental attitude is better expressed as sitting unmoveable like an object.

Now the basic impulse behind existentialism is optimistic, very much like the impulse behind all science. Existentialism is romanticism, and romanticism is the feeling that man is not the mere he has always taken himself for. Romanticism began as a tremendous surge of optimism about the stature of man. Its aim - like that of science - was to raise man above the muddled feelings and impulses of his everyday humanity, and to make him a god-like observer of human existence.

Since sounds have no natural connection with our ideas ... the doubtfulness and uncertainty of their signification ... has its cause more in the ideas they stand for than in any incapacity there is in one sound more than another to signify any idea.

Bless Madison Ave for restoring the magical art of the cavemen to suburbia.

Love one another. My final lesson of history is the same as that of Jesus. You may think that's a lot of lollipop but just try it. Love is the most practical thing in the world. If you take an attitude of love toward everybody you meet, you'll eventually get along. When asked, at the age of 92, if he could summarize the lessons of history into a single sentence.

Be kind. Don't kill for any reason. Don't even kill out of self-defense. Really - I mean that. Don't take any more than you need of anything. Help others.

I have never seen a class so deeply demoralised, so incurably debased by selfishness, so corroded within, so incapable of progress, as the English bourgeoisie; and I mean by this, especially the bourgeoisie proper, particularly the Liberal, Corn Law repealing bourgeoisie. For it nothing exists in this world, except for the sake of money, itself not excluded. It knows no bliss save that of rapid gain, no pain save that of losing gold. In the presence of this avarice and lust of gain, it is not possible for a single human sentiment or opinion to remain untainted.

The art of progress is to preserve order amid change, and to preserve change amid order.

In the 'Induction of Causes' the principal maxim is, that we must be careful to possess, and to apply, with perfect clearness, the Fundamental Idea on which the Induction depends. The Induction of Substance, of Force, of Polarity, go beyond mere laws of phenomena, and may be considered as the Induction cf Causes. The Cause of certain phenomena being inferred, we are led to inquire into the Cause of this Cause, which inquiry must be conducted in the same manner as the previous one; and thus we have the Induction of Ulterior Causes.

I don't really know what they mean by "intellectuals," all the people who describe, denounce, or scold them. I do know, on the other hand, what I have committed myself to, as an intellectual, which is to say, after all, a cerebro-spinal individual: to having a brain as supple as possible and a spinal column that's as straight as necessary.

Power acquired by violence is only a usurpation, and lasts only as long as the force of him who commands prevails over that of those who obey.

There lay certitude; there, in the daily round. All the rest hung on mere threads and trivial contingencies; you couldn't waste your time on it. The thing was to do your job as it should be done.

But the exceedingly foul deed of Onan, the basest of wretches, follows. Onan must have been a malicious and incorrigible scoundrel. This is a most disgraceful sin. It is far more atrocious than incest and adultery. We call it unchastity, yes a Sodomitic sin. For Onan goes in to her; that is, he lies with her and copulates, and when it comes to the point of insemination, spills the semen, lest the woman conceive. Surely at such a time the order of nature established by God in procreation should be followed. Accordingly, it was a most disgraceful crime to produce semen and excite the woman, and to frustrate her at that very moment.