Science does not stand still, and neither does philosophy, although the latter has a tendency to walk in circles.

Pragmatism, in trying to turn experimental physics into a prototype of all science and to model all spheres of intellectual life after the techniques of the laboratory, is the counterpart of modern industrialism, for which the factory is the prototype of human existence, and which models all branches of culture after production on the conveyor belt.

What the English call "comfortable" is something endless and inexhaustible. Every condition of comfort reveals in turn its discomfort, and these discoveries go on for ever. Hence the new want is not so much a want of those who have it directly, but is created by those who hope to make profit from it.

Life has always seemed to me like a plant that lives on its rhizome. Its true life is invisible, hidden in the rhizome. The part that appears above ground lasts only a single summer. What we see is the blossom, which passes. The rhizome remains. Closing lines of the preface

He had no failings which were not owing to a noble cause; to an ardent, generous, perhaps an immoderate passion for fame; a passion which is the instinct of all great souls.

At the end of Being and Nothingness, ... Being in-itself and Being for-itself were of Being; and this totality of beings, in which they were effected, itself was linked up to itself, relating and appearing to itself, by means of the essential project of human-reality. What was named in this way, in an allegedly neutral and undetermined way, was nothing other than the metaphysical unity of man and God, the relation of man to God, the project of becoming God as the project constituting human-reality. Atheism changes nothing in this fundamental structure.

A man is a man to the extent that he is a superman. A man should be defined by the sum of those tendencies which impel him to surpass the human condition.

There is nothing disastrous in the temporary nature of our ideas. They are always that. But there may very easily be a train of evil in the self-deception which regards them as final. I think God will forgive us our skepticism sooner than our Inquisitions.

By scientific thought we mean the application of past experience to new circumstances by means of an observed order of events. By saying that this order of events is exact we mean that it is exact enough to correct experiments by, but we do not mean that it is theoretically or absolutely exact, because we do not know. The process of inference [is] in itself an assumption of uniformity, and... as the known exactness of the uniformity became greater, the stringency of the inference [is] increased. By saying that the order of events is reasonable we do not mean that everything has a purpose, or that everything can be explained, or that everything has a cause; for neither of these is true. But we mean that to every reasonable question there is an intelligible answer, which either we or posterity may know by the exercise of scientific thought.

Man reaches the highest point of his knowledge about God when he knows that he knows him not, inasmuch as he knows that that which is God transcends whatsoever he conceives of him.

It is the man of science, eager to have his every opinion regenerated, his every idea rationalized, by drinking at the fountain of fact, and devoting all the energies of his life to the cult of truth, not as he understands it, but as he does not yet understand it, that ought properly to be called a philosopher. To an earlier age knowledge was power - merely that and nothing more; to us it is life and the summum bonum. Emancipation from the bonds of self, of one's own prepossessions, importunately sought at the hands of that rational power before which all must ultimately bow, - this is the characteristic that distinguishes all the great figures of nineteenth-century science from those of former periods.

The child shows its individual tendencies in its plays, in its questions, in its association with people and things. But it has to struggle with everlasting external interference in its world of thought and emotion. It must not express itself in harmony with its nature, with its growing personality. It must become a thing, an object. Its questions are met with narrow, conventional, ridiculous replies, mostly based on falsehoods; and, when, with large, wondering, innocent eyes, it wishes to behold the wonders of the world, those about it quickly lock the windows and doors, and keep the delicate human plant in a hothouse atmosphere, where it can neither breathe nor grow freely.

The doctrine of the Second Coming has failed, so far as we are concerned, if it does not make us realize that at every moment of every year in our lives Donne's question "What if this present were the world's last night?" is equally relevant.

He who must still exhort himself, and be exhorted, to will the good, has as yet no firm and ever-ready will, but wills a will anew every time he needs it. But he who has such a stable will, wills what he wills for ever, and cannot under any circumstances will otherwise than he always wills. For him freedom of the will is destroyed and swallowed up in necessity.

I. The subjects of every state ought to contribute towards the support of the government, as nearly as possible, in proportion to their respective abilities, that is, in proportion to the revenue which they respectively enjoy under the protection of the state.

For in every country of the world, I believe, the avarice and injustice of princes and sovereign states, abusing the confidence of their subjects, have by degrees diminished the real quantity of metal, which had been originally contained in their coins.

This education, therefore, results at the very outset in knowledge which transcends all experience, which is abstract, absolute, and strictly universal, and which includes within itself beforehand all subsequently possible experience. On the other hand, the old education was concerned, as a rule, only with the actual qualities of things as they are and as they should be believed and rioted, without anyone being able to assign a reason for them. It aimed, therefore, at purely passive reception by means of the power of memory, which was completely at the service of things. It was, therefore, impossible to have any idea of the mind as an independent original principle of things themselves.

What the Greeks sought, and what they obtained, was Equal Rights for all Citizens. In a certain sense, we might even say Equal Privileges, for there was no race favoured by the constitution more than another;-but there existed a great inequality of power, which indeed arose only by accident and not by the constitution of the State, but which nevertheless the State could not remedy;-and in so far there did not exist Equal Privileges.

I foresee the day when we shall read nothing but telegrams and prayers.

You cannot think without abstractions; accordingly, it is of the utmost importance to be vigilant in critically revising your modes of abstraction. It is here that philosophy finds its niche as essential to the healthy progress of society. It is the critic of abstractions. A civilisation which cannot burst through its current abstractions is doomed to sterility.

There can be no difference anywhere that doesn't make a difference elsewhere - no difference in abstract truth that doesn't express itself in a difference in concrete fact and in conduct consequent upon that fact, imposed on somebody, somehow, somewhere and somewhen.

The more man ascends through the past, and the more he launches into the future, the greater he will be, and all these philosophers and ministers and truth-telling men who have fallen victims to the stupidity of nations, the atrocities of priests, the fury of tyrants, what consolation was left for them in death? This: That prejudice would pass, and that posterity would pour out the vial of ignominy upon their enemies. O Posterity! Holy and sacred stay of the unhappy and the oppressed; thou who art just, thou who art incorruptible, thou who findest the good man, who unmaskest the hypocrite, who breakest down the tyrant, may thy sure faith, thy consoling faith never, never abandon me!

Good communication is as stimulating as black coffee, and just as hard to sleep after. 

Once a word has been allowed to escape, it cannot be recalled.

You may break your heart, but men will still go on as before.

Continence is a branch of temperance, which prevents the diseases, infamy, remorse, and punishment, to which those are exposed, who indulge themselves in unlawful amours.

The crop of spiritual talent that is born to you, of human nobleness and intellect and heroic faculty, this is infinitely more important than your crops of cotton or corn, or wine or herrings or whale-oil, which the Newspapers record with such anxiety every season.

Your crystal? That's silly. Whom do you think you are fooling? Come on, everyone knows that I threw the baby out of the window. The crystal is shattered on earth, and I do not care. I am no longer anything but a skin, and my skin does not belong to you.

No revolution can ever succeed as a factor of liberation unless the MEANS used to further it be identical in spirit and tendency with the PURPOSES to be achieved. Revolution is the negation of the existing, a violent protest against man's inhumanity to man with all the thousand and one slaveries it involves. It is the destroyer of dominant values upon which a complex system of injustice, oppression, and wrong has been built up by ignorance and brutality. It is the herald of NEW VALUES, ushering in a transformation of the basic relations of man to man, and of man to society.

Ironic philosophies produce passionate works. Any thought that abandons unity glorifies diversity! And diversity is the home of art. The only thought to liberate the mind is that which leaves it alone, certain of its limits and of its impending end. No doctrine tempts it. It awaits the ripening of the work and of life.

There is but One Principle that proceeds from God; and thus, in consequence of the unity of the Power, it is possible for each Individual to schematise his World of Sense in accordance with the law of that original harmony; - and every Individual, under the condition of being found on the way towards the recognition of the Imperative, must so schematise it. I might say: - Every Individual can and must, under the given condition, construct the True World of Sense, - for this indeed has beyond the universal and formal laws above deduced, no other Truth and Reality than this universal harmony.

The essential nature (concerning the soul) cannot be corporeal, yet it is also clear that this soul is present in a particular bodily part, and this one of the parts having control over the rest (heart).

For a country to have a great writer ... is like having another government. That's why no régime has ever loved great writers, only minor ones.

A woman's body is a dark and monstrous mystery;between her supple thighs a heavy whirlpool swirls,two rivers crash, and woe to him who slips and falls!

But the extraordinary insight which some persons are able to gain of others from indications so slight that it is difficult to ascertain what they are, is certainly rendered more comprehensible by the view here taken.

Not much younger than these (sc. Hermotimus of Colophon and Philippus of Mende) is Euclid, who put together the Elements, collecting many of Eudoxus' theorems, perfecting many of Theaetetus', and also bringing to irrefragable demonstration the things which were only somewhat loosely proved by his predecessors. This man lived in the time of the first Ptolemy. For Archimedes, who came immediately after the first (Ptolemy), makes mention of Euclid: and, further, they say that Ptolemy once asked him if there was in geometry any shorter way than that of the elements, and he answered that there was no royal road to geometry. He is then younger than pupils of Plato but older than Eratosthenes and Archimedes; for the latter were contemporary with one another, as Eratosthenes somewhere says.

Miniaturization doesn't actually make sense unless you miniaturize the very atoms of which matter is composed. Otherwise a tiny brain in a man the size of an insect, composed of normal atoms, is composed of too few atoms for the miniaturized man to be any more intelligent than the ant. Also, miniaturizing atoms is impossible according to the rules of quantum mechanics.

Money is therefore not only the object but also the fountainhead of greed.

Poetry and imagination begin life. A child will fall on its knees on the gravel walk at the sight of a pink hawthorn in full flower, when it is by itself, to praise God for it.

In its beginnings, the credit system sneaks in as a modest helper of accumulation and draws by invisible threads the money resources scattered all over the surface of society into the hands of individual or associated capitalists. But soon it becomes a new and formidable weapon in the competitive struggle, and finally it transforms itself into an immense social mechanism for the centralisation of capitals.

We have to learn to think in a new way. We have to learn to ask ourselves, not what steps can be taken to give military victory to whatever group we prefer, for there no longer are such steps; the question we have to ask ourselves is: what steps can be taken to prevent a military contest of which the issue must be disastrous to all parties?

I believe that it is possible for one to praise, without concern, any man after he is dead since every reason and supervision for adulation is lacking.

There is a great analogy between grace and genius, for genius is a grace. The real man of genius is the one who acts by grace or by impulsion, without ever contemplating himself and without ever saying to himself: Yes! It is by grace that I act.

There can be only one permanent revolution - a moral one; the regeneration of the inner man. How is this revolution to take place? Nobody knows how it will take place in humanity, but every man feels it clearly in himself. And yet in our world everybody thinks of changing humanity, and nobody thinks of changing himself.

Ego is a social institution with no physical reality. The ego is simply your symbol of yourself. Just as the word "water" is a noise that symbolizes a certain liquid without being it, so too the idea of ego symbolizes the role you play, who you are, but it is not the same as your living organism.

And He is the God of the humble, for in the words of the Apostle, God chose the foolish things of the world to confound the wise and the weak things of the world to confound the things which are mighty (I Cor. i. 27) And God is in each of us in the measure in which one feels Him and loves Him. "If of two men," says Kierkegaard, "one prays to the true God without sincerity of heart, and the other prays to the an idol with all the passion of an infinite yearning, it is the first who really prays to the idol, while the second really prays to God." It would be better to say that the true God is He to whom man truly prays and whom man truly desires. And there may even be a truer revelation in superstition itself than in theology.