Treat your inferiors as you would be treated by your betters.

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.

Our assent to the hypothesis implies that it is held to be true of all particular instances. That these cases belong to past or to future times, that they have or have not already occurred, makes no difference in the applicability of the rule to them. Because the rule prevails, it includes all cases.

Beauty is indeed a good gift of God; but that the good may not think it a great good, God dispenses it even to the wicked.

Time is a game played beautifully by children.

Monsters cannot be announced. One cannot say: 'here are our monsters', without immediately turning the monsters into pets.

No rational argument will have a rational effect on a man who does not want to adopt a rational attitude.

And now the sagacious reader, who is capable of reading into these lines what does not stand written in them, but is nevertheless implied, will be able to form some conception of the serious feelings with which I then set foot in Emmendingen.

Unjust laws exist: shall we be content to obey them, or shall we endeavor to amend them, and obey them until we have succeeded, or shall we transgress them at once?

All that is under heaven, says the sage, runs one law and one fortune.

Think about the two qualities that a virus, or any sort of parasitic replicator, demands of a friendly medium, the two qualities that make cellular machinery so friendly towards parasitic DNA, and that make computers so friendly towards computer viruses. These qualities are, firstly, a readiness to replicate information accurately, perhaps with some mistakes that are subsequently reproduced accurately; and, secondly, a readiness to obey instructions encoded in the information so replicated.

Man's power appears to have increased out of all proportion to his wisdom. He has never been in a better position to build a healthy, happy, and productive world; yet things have perhaps never seemed so black.

We desire nothing so much as what we ought not to have.

Who are those people by whom you wish to be admired? Are they not these about whom you are in the habit of saying that they are mad? What then? Do you wish to be admired by the mad?

Paradise was unendurable, otherwise the first man would have adapted to it; this world is no less so, since here we regret paradise or anticipate another one. What to do? Where to go? Do nothing and go nowhere, easy enough.

All those movements which took place in the fifteenth and sixteenth centuries and which had the Reformation as their main expression and result should be analyzed as a great crisis of the Western experience of subjectivity and a revolt against the kind of religious and moral power which gave form, during the Middle Ages, to this subjectivity. The need to take a direct part in spiritual life, in the work of salvation, in the truth which lies in the Book-all that was a struggle for a new subjectivity.

Technology is in its essence something that human beings cannot master of their own accord.

Were the happiness of the next world as closely apprehended as the felicities of this, it were a martyrdom to live.

Maybe the target nowadays is not to discover what we are but to refuse what we are.

In a quarrel for earth, turn not to earth.

Every technology contrived and "outered" by man has the power to numb human awareness during the period of its first interiorization.

The horseman serves the horse, The neatherd serves the neat, The merchant serves the purse, The eater serves his meat; 'Tis the day of the chattel, Web to weave, and corn to grind; Things are in the saddle, And ride mankind.

Those, no doubt, are in some way fortunate who have brought themselves, or have been brought by others, to obey some ultimate principle before the bar of which all problems can be brought. Single-minded monists, ruthless fanatics, men possessed by an all-embracing coherent vision do not know the doubts and agonies of those who cannot wholly blind themselves to reality.

We are in a logic of simulation, which no longer has anything to do with a logic of facts and an order of reason. Simulation is characterized by a precession of the model, of all the models based on the merest fact-the models come first, their circulation, orbital like that of the bomb, constitutes the genuine magnetic field of the event. The facts no longer have a specific trajectory, they are born at the intersection of models, a single fact can be engendered by all the models at once.

An hereditary chief, strictly limited, the right of war vested in the legislative body, a rigid economy of the public contributions, and absolute interdiction of all useless expenses, will go far towards keeping the government honest and unoppressive. But the only security of all is in a free press. The force of public opinion cannot be resisted, when permitted freely to be expressed. The agitation it produces must be submitted to. It is necessary, to keep the waters pure.

When the Superior Man (Junzi) eats he does not try to stuff himself; at rest he does not seek perfect comfort; he is diligent in his work and careful in speech. He avails himself to people of the Tao and thereby corrects himself. This is the kind of person of whom you can say, "he loves learning."

We measure the earth, sun, stars, and ocean depths. We burrow into the depths of the earth for gold. We search for rivers and mountains on the moon. We discover new stars and know their magnitudes. We sound the depths of gorges and build clever machines. Each day brings a new invention. What don't we think of! What can't we do! But there is something else, the most important thing of all, that we are missing. We do not know exactly what it is. We are like a small child who knows he does not feel well but cannot explain why. We are uneasy, because we know a lot of superfluous facts; but we do not know what is really important-ourselves.

All science must start with some assumptions as to the ultimate analysis of the facts with which it deals. These assumptions are justified partly by their adherence to the types of occurrence of which we are directly conscious, and partly by their success in representing the observed facts with a certain generality, devoid of ad hoc suppositions.

To this day, and in quarters where they should know better, Darwinism is widely regarded as a theory of 'chance'.It is grindingly, creakingly, crashingly obvious that, if Darwinism were really a theory of chance, it couldn't work. You don't need to be a mathematician or physicist to calculate that an eye or a haemoglobin molecule would take from here to infinity to self-assemble by sheer higgledy-piggledy luck. Far from being a difficulty peculiar to Darwinism, the astronomic improbability of eyes and knees, enzymes and elbow joints and the other living wonders is precisely the problem that any theory of life must solve, and that Darwinism uniquely does solve.

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."

Good tests kill flawed theories; we remain alive to guess again.

Our luxuries have condemned us to weakness; we have ceased to be able to do that which we have long declined to do.

I may say Christianity itself divided into its thousands also, who are disputing, anathematizing and where the laws permit burning and torturing one another for abstractions which no one of them understand, and which are indeed beyond the comprehension of the human mind.

Everything is worth what its purchaser will pay for it.

Fire is the best of servents; but what a master!

If you tried to doubt everything you would not get as far as doubting anything. The game of doubting itself presupposes certainty.

My reason will still not understand why I pray, but I shall still pray, and my life, my whole life, independently of anything that may happen to me, is every moment of it no longer meaningless as it was before, but has an unquestionable meaning of goodness with which I have the power to invest it.

Imagination, which is the social sense, animates the inanimate and anthropomorphizes everything; it humanizes everything and even makes everything identical with man. And the work of man is to supernaturalize Nature - that is to say, to make it divine by making it human, to help it to become conscious of itself, in short. The action of reason, on the other hand, is to mechanize or materialize.

We seek not what God could have done but what He has done.... God could have caused birds to fly with bones of solid gold, with veins full of quicksilver, with flesh heavier than lead and very small and heavy wings, so as to better show His power ... but He wanted to make their bones, flesh and feathers very light ... to teach us that He likes simplicity and ease.

I approach the presentation of Kierkegaard with some trepidation. Next to Nietzsche, or rather, prior to Nietzsche, I consider him to be the most important thinker of our post-Kantian age. With Goethe and Hegel, an epoch had reached its conclusion, and our prevalent way of thinking - that is, the positivistic, natural-scientific one - cannot really be considered as philosophy.

The refined and active, on the other hand, prefer honour, which I suppose may be said to be the end of the political life. Yet honour is plainly too superficial to be the object of our search, because it appears to depend rather on those who give than on those who receive it, whereas we feel instinctively that the good must be something proper to a man, which cannot easily be taken from him.

The ideal form for a poem, essay, or fiction, is that which the ideal writer would evolve spontaneously. One in whom the powers of expression fully responded to the state of feeling, would unconsciously use that variety in the mode of presenting his thoughts, which Art demands.

Other curious and rather ominous consequences of war are the increased anti-Semitism which one meets in all classes, particularly the common people, and the strong recrudescence of anti-negro passions in the South. The first is due to the age-old dislike of a monied, influential and pushing minority, coupled with a special grudge against the Jews as being chiefly instrumental, in public opinion, in getting America into the war.

I must before I die, find some way to say the essential thing that is in me, that I have never said yet - a thing that is not love or hate or pity or scorn, but the very breath of life, fierce and coming from far away, bringing into human life the vastness and fearful passionless force of non-human things...