In many ways an artistic nature unfits a man for practical existence.

Of all the schools of patience and lucidity, creation is the most effective. It is also the staggering evidence of man's sole dignity: the dogged revolt against his condition, perseverance in an effort considered sterile. It calls for a daily effort, self-mastery, a precise estimate of the limits of truth, measure, and strength. It constitutes an ascesis. All that "for nothing," in order to repeat and mark time. But perhaps the great work of art has less importance in itself than in the ordeal it demands of a man and the opportunity it provides him of overcoming his phantoms and approaching a little closer to his naked reality.

The theme of Cosmology, which is the basis of all religions, is the story of the dynamic effort of the World passing into everlasting unity, and of the static majesty of God's vision, accomplishing its purpose of completion by absorption of the World's multiplicity of effort.

How we hate this solemn Ego that accompanies the learned, like a double, wherever he goes.

We shall, therefore, assume the complete physical equivalence of a gravitational field and a corresponding acceleration of the reference system.

What is necessary at this stage in our evolution is not a 'return' to the psychic powers of our ancestors, but an expansion of our own potential powers, based upon the certain knowledge that such powers exist.

Life, in that it is life, necessarily entails justice.

The very cannibalism of the counterrevolution will convince the nations that there is only one way in which the murderous death agonies of the old society and the bloody birth throes of the new society can be shortened, simplified and concentrated, and that way is revolutionary terror.

Do not let habit, born from experience, force you along this road, directing aimless eye and echoing ear and tongue; but judge by reason the much contested proof which I have spoken.

I should prefer that Fortune keep me in her camp rather than in the lap of luxury. If I am tortured, but bear it bravely, all is well; if I die, but die bravely, it is also well.

Custom renders love attractive; for that which is struck by oft-repeated blows however lightly, yet after long course of time is overpowered and gives way. See you not too that drops of water falling on rocks after long course of time scoop a hole through these rocks?

I lie on the beach like a crocodile and let myself be roasted by the sun. I never see a newspaper and don't give a damn for what is called the world.

Let us try to teach generosity and altruism, because we are born selfish. Let us understand what our own selfish genes are up to, because we may then at least have a chance to upset their designs, something that no other species has ever aspired to do.

Ressentiment must therefore be strongest in a society like ours, where approximately equal rights (political and otherwise) or formal social equality, publicly recognized, go hand in hand with wide factual differences in power, property, and education.

I saw a Divine Being. I'm afraid I'm going to have to revise all my various books and opinions.

A conception of justice cannot be deduced from self evident premises or conditions on principles; instead, its justification is a matter of the mutual support of many considerations, of everything fitted together into one coherent view.

Apart from logical cogency, there is to me something a little odd about the ethical valuations of those who think that an omnipotent, omniscient, and benevolent Deity, after preparing the ground by many millions of years of lifeless nebulae, would consider Himself adequately rewarded by the final emergence of Hitler and Stalin and the H-bomb. 

The days .... come and go like muffled and veiled figures, sent from a distant friendly party; but they say nothing, and if we do not use the gifts they bring, they carry them as silently away.

My desire for knowledge is intermittent; but my desire to bathe my head in atmospheres unknown to my feet is perennial and constant. The highest that we can attain to is not Knowledge, but Sympathy with Intelligence. I do not know that this higher knowledge amounts to anything more definite than a novel and grand surprise on a sudden revelation of the insufficiency of all that we called Knowledge before - a discovery that there are more things in heaven and earth than are dreamed of in our philosophy.

By relieving the brain of all unnecessary work, a good notation sets it free to concentrate on more advanced problems, and in effect increases the mental power of the race..

I would rather sleep in the southern corner of a little country churchyard, than in the tombs of the Capulets.

Whether or not there exists a solution to problems troubles only a minority; that the emotions have no outcome, lead to nothing, vanish into themselves - that is the great unconscious drama, the affective insolubility everyone suffers without even thinking about it.

One right-thinking man thinks like all other right-thinking men of his time-that is to say, in most cases, like some wrong-thinking man of another time.

The total victimization of the individual that takes place is encouraged for the specific benefit of the industrial and political bureaucracy. It therefore cannot be justified on the ground of the individual's true interest. National Socialist ideology simply states that true human existence consists in unconditional sacrifice, that it is of the essence of the individual's life to abbey and to serve-'service which never comes to an end because service and life coincide.'

The more we devote ourselves to observing animals and their behaviour, the more we love them, on seeing how gready they care for their young; in such a context, we cannot even contemplate cruelty to a wolf. Leibnitz put the grub he had been observing back on the tree with its leaf, lest he should be guilty of doing any harm to it. It upsets a man to destroy such a creature for no reason, and this tenderness is subsequently transferred to man.

Almost anything that consoles us is a fake.

My life - I had lived in its heights and its depths, in bitter sorrow and ecstatic joy, in black despair and fervent hope. I had drunk the cup to the last drop. I had lived my life. Would I had the gift to paint the life I had lived!

Someone once asked me, "If you had your choice, Dr. Asimov, would it be women or writing?" My answer was, "Well, I can write for twelve hours at a time without getting tired."

Men are at variance with the one thing with which they are in the most unbroken communion, the reason that administers the whole universe.

You need to know enough philosophy so that the methods of logical analysis are available to you to be used as a tool. One of the most depressing things about educated people today is that so few of them, even among professional intellectuals, are able to follow the steps of a simple logical argument.

When one compares the talents one has with those of a Leibniz, one is tempted to throw away one's books and go die quietly in the dark of some forgotten corner.

Important though the general concepts and propositions may be with which the modern industrious passion for axiomatizing and generalizing has presented us, in algebra perhaps more than anywhere else, nevertheless I am convinced that the special problems in all their complexity constitute the stock and core of mathematics; and to master their difficulties requires on the whole the harder labor.

The tyrant has arisen, and the king and oligarchy and aristocracy and democracy, because men are not contented with that one perfect ruler, and do not believe that there could ever be any one worthy of such power or willing and able by ruling with virtue and knowledge to dispense justice and equity rightly to all, but that he will harm and kill and injure any one of us whom he chooses on any occasion, since they admit that if such a man as we describe should really arise, he would be welcomed and would continue to dwell among them, directing to their weal as sole ruler a perfectly right form of government. But, as the case now stands, since, as we claim, no king is produced in our states who is, like the ruler of the bees in their hives, by birth pre-eminently fitted from the beginning in body and mind, we are obliged, as it seems, to follow in the track of the perfect and true form of government by coming together and making written laws.

Where have they gone, the brilliant, the insightful ones, the proud?

Cinema is an old whore, like circus and variety, who knows how to give many kinds of pleasure. Besides, you can't teach old fleas new dogs.

The principle of bounded rationality is the capacity of the human mind for formulating and solving complex problems is very small compared with the size of the problems whose solution is required for objectively rational behavior in the real world - or even for a reasonable approximation to such objective rationality.

All this is merely saying that he, in a degree once common, but now very unusual, threw his feelings into his opinions; which truly it is difficult to understand how any one who possesses much of both, can fail to do. None but those who do not care about opinions, will confound it with intolerance. Those, who having opinions which they hold to be immensely important, and their contraries to be prodigiously hurtful, have any deep regard for the general good, will necessarily dislike, as a class and in the abstract, those who think wrong what they think right, and right what they think wrong: though they need not therefore be, nor was my father, insensible to good qualities in an opponent, nor governed in their estimation of individuals by one general presumption, instead of by the whole of their character.

It is not only in literature that fiction generates immorality. It does it also in life itself. For the substance of our life is almost exclusively composed of fiction. We fictionalize our future, and, unless we are heroically devoted to truth, we fictionalize our past, refashioning it to our taste. We do not study other people; we invent what they are thinking, saying, and doing. Reality provides us with some raw material, just as novelists often take a theme from a news item, but we envelop it in a fog in which, as in all fiction, values are reversed, so that evil is attractive and good is tedious.

The people should never be deceived, under any pretext or for any purpose. It would not only be criminal but detrimental to the revolutionary cause, for deception of any kind, by its very nature, is shortsighted, petty, narrow, always sewn with rotten threads, so that it inevitably tears and is exposed.

I believe... that every human mind feels pleasure in doing good to another.

The superior man thinks of virtue; the small man thinks of comfort. The superior man thinks of the sanctions of law; the small man thinks of favors which he may receive.

Every sentence I utter must be understood not as an affirmation, but as a question.

Montaigne puts not self-satisfied understanding but a consciousness astonished at itself at the core of human existence.

The end cannot justify the means for the simple and obvious reason that the means employed determine the nature of the ends produced.

No man who has once heartily and wholly laughed can be altogether irreclaimably bad.

I am well aware of how anarchic much of what I say may sound. Expressing myself thus abstractly and briefly, I may seem to despair of the very notion of truth. But I beseech you to reserve your judgment until we see it applied to the details which lie before us. I do indeed disbelieve that we or any other mortal men can attain on a given day to absolutely incorrigible and unimprovable truth about such matters of fact as those with which religions deal. But I reject this dogmatic ideal not out of a perverse delight in intellectual instability. I am no lover of disorder and doubt as such. Rather do I fear to lose truth by this pretension to possess it already wholly.

It is true that every increase of knowledge may possibly render depravity more depraved, as well as it may increase the strength of virtue. It is in itself only power; and its value depends on its application.

It is always better to have no ideas than false ones; to believe nothing, than to believe what is wrong.