Ambition is not a vice of little people.

Violence breeds violence. Acts of violence committed in "justice" or in affirmation of "rights" or in defense of "peace" do not end violence. They prepare and justify its continuation.

The fact that goals may be dependent for their force on other more distant ends leads to the arrangement of these goals in a hierarchy - each level to be considered as an end relative to the levels below it and as a mean to the levels above it.

I do not believe that civilizations have to die...Civilization is not an organism. It is a product of wills.

The same polarity of the male and female principle exists in nature; not only, as is obvious in animals and plants, but in the polarity of the two fundamental functions, that of receiving and penetrating. It is the polarity of earth and rain, of the river and the ocean, of night and day, of darkness and light, of matter and spirit.

The study a posteriori of the distribution of consciousness shows it to be exactly such as we might expect in an organ added for the sake of steering a nervous system grown too complex to regulate itself.

Karl Marx was born at Trier on 5 May 1818, the child of Jewish parents with a long rabbinical tradition on both sides. His grandfathers were rabbis; his father, a well-to-do lawyer, changed his first name from Herschel to Heinrich and adopted Protestantism, which in Prussia was a necessary condition of professional and cultural emancipation.

"And the upshot of all this," so I have been told more than once and by more than one person, "will be simply that all you will succeed in doing will be to drive people to the wildest Catholicism." And I have been accused of being a reactionary and even a Jesuit. Be it so! ...I know very well it is madness to seek to turn the waters of the river back to their source, and that it is only the ignorant who seek to find in the past a remedy for their present ills; but I know too that anyone who fights for any ideal whatever, although his ideal may seem to lie in the past, is driving the world on to the future, and that the only reactionaries are those who find themselves at home in the present. Every supposed restoration of the past is a creation of the future, and if the past which it is sought to restore is a dream, something imperfectly known, so much the better.

To have time was at once the most magnificent and the most dangerous of experiments. Idleness is fatal only to the mediocre.

Reality is harsh to the feet of shadows.

We are no longer instinctively driven to apprehend, and lay to heart, what is Good and Lovely, but rather to inquire, as onlookers, how it is produced, whence it comes, whither it goes. Our favourite Philosophers have no love and no hatred; they stand among us not to do, nor to create anything, but as a sort of Logic mills, to grind out the true causes and effects of all that is done and created.

The enmity of one's kindred is far more bitter than the enmity of strangers.

I am responsible for everything ... except for my very responsibility, for I am not the foundation of my being. Therefore everything takes place as if I were compelled to be responsible. I am abandoned in the world ... in the sense that I find myself suddenly alone and without help, engaged in a world for which I bear the whole responsibility without being able, whatever I do, to tear myself away from this responsibility for an instant.

What the history of Philosophy shows us is a succession of noble minds, a gallery of heroes of thought, who, by the power of reason, have penetrated into the being of things, of nature and of spirit, into the Being of God, and have won for us by their labours the highest treasure, the treasure of reasoned knowledge.

Revolution is like the daughters of Pelias: it cuts humanity to pieces in order to rejuvenate it.

You, Socrates, began by saying that virtue can't be taught, and now you are insisting on the opposite, trying to show that all things are knowledge, justice, soundness of mind, even courage, from which it would follow that virtue most certainly can be taught.

Just as a vagrant accused of stealing a carrot from a field stands before a comfortably seated judge who keeps up an elegant flow of queries, comments and witticisms while the accused is unable to stammer a word, so truth stands before an intelligence which is concerned with the elegant manipulation of opinions.

Only lay down true principles, and adhere to them inflexibly. Do not be frightened into their surrender by the alarms of the timid, or the croakings of wealth against the ascendency of the people.

Compared with the wholesale violence of capital and government, political acts of violence are but a drop in the ocean. That so few resist is the strongest proof how terrible must be the conflict between their souls and unbearable social iniquities.

In recent times it has been fashionable to talk of the levelling of nations, of the disappearance of different races in the melting-pot of contemporary civilization. I do not agree with this opinion, but its discussion remains another question. Here it is merely fitting to say that the disappearance of nations would have impoverished us no less than if all men had become alike, with one personality and one face. Nations are the wealth of mankind, its collective personalities; the very least of them wears its own special colours and bears within itself a special facet of divine intention.

Although the Law of Reason is common, the majority of people live as though they had an understanding of their own.

As well as seriously - indeed exhaustively - researching everything that could conceivably go wrong, I think we should also investigate what could go right. The world is racked by suffering. The hedonic treadmill might more aptly be called a dolorous treadmill. Hundreds of millions of people are currently depressed, pain-ridden or both. Hundreds of billions of non-human animals are suffering too. If we weren't so inured to a world of pain and misery, then the biosphere would be reckoned in the throes of a global medical emergency. Thanks to breakthroughs in biotechnology, pain-thresholds, default anxiety levels, hedonic range and hedonic set-points are all now adjustable parameters in human and non-human animals alike. We are living in the final century of life on Earth in which suffering is biologically inevitable. As a society, we need an ethical debate about how much pain and misery we want to preserve and create. How do you break the hedonic treadmill?"

The study of mathematics is apt to commence in disappointment... We are told that by its aid the stars are weighed and the billions of molecules in a drop of water are counted. Yet, like the ghost of Hamlet's father, this great science eludes the efforts of our mental weapons to grasp it.

One should be wary of assuming that we're the folk who can properly look after ourselves, whereas our descendants, if they become genetically pre-programmed ecstatics, will get trapped in robot-serviced states of infantile dependence. For it shouldn't be forgotten that exuberantly happy people also have a fierce will to survive. They love life dearly. They take on daunting challenges against seemingly impossible odds. One of the hallmarks of many endogenous depressive states, on the other hand, is so-called behavioural despair. If one learns that apparently no amount of effort can rescue one from an aversive stimulus, then one tends to sink into a lethargic stupor. This syndrome of "learned helplessness" may persist even when the opportunity to escape from the nasty stimulus subsequently arises.

Every process pushed far enough tends to reverse or flip suddenly. Chiasmus - the reversal to process caused by increasing its speed, scope or size.

He who flies from his master is a runaway; but the law is master, and he who breaks the law is a runaway. And he also who is grieved or angry or afraid, is dissatisfied because something has been or is or shall be of the things which are appointed by Him who rules all things, and He is Law, and assigns to every man what is fit. He then who fears or is grieved or is angry is a runaway.

Of things that are external, happen what will to that which can suffer by external accidents. Those things that suffer let them complain themselves, if they will; as for me, as long as I conceive no such thing, that that which is happened is evil, I have no hurt; and it is in my power not to conceive any such thing.

If you press me to say why I loved him, I can say no more than it was because he was he, and I was I. Variants: If a man urge me to tell wherefore I loved him, I feel it cannot be expressed but by answering: Because it was he, because it was myself. If a man should importune me to give a reason why I loved him, I find it could no otherwise be expressed, than by making answer: because it was he, because it was I.

The unassisted hand and the understanding left to itself possess but little power. Effects are produced by the means of instruments and helps, which the understanding requires no less than the hand; and as instruments either promote or regulate the motion of the hand, so those that are applied to the mind prompt or protect the understanding.

It has ever been held the highest wisdom for a man not merely to submit to Necessity,-Necessity will make him submit,-but to know and believe well that the stern thing which Necessity had ordered was the wisest, the best, the thing wanted there. To cease his frantic pretension of scanning this great God's-World in his small fraction of a brain; to know that it had verily, though deep beyond his soundings, a Just Law, that the soul of it was Good;-that his part in it was to conform to the Law of the Whole, and in devout silence follow that; not questioning it, obeying it as unquestionable.

It might be said to the agitator, "However convinced you were of the justice of your cause and the truth of your convictions, you ought not to have made a public attack upon any man's character until you had examined the evidence on both sides with the utmost patience and care." In the first place, let us admit that, so far as it goes, this view of the case is right and necessary; right, because even when a man's belief is so fixed that he cannot think otherwise, he still has a choice in the action suggested by it, and so cannot escape the duty of investigating on the ground of the strength of his convictions; and necessary, because those who are not yet capable of controlling their feelings and thoughts must have a plain rule dealing with overt acts.

Mark how fleeting and paltry is the estate of man - yesterday in embryo, tomorrow a mummy or ashes. So for the hairsbreadth of time assigned to thee, live rationally, and part with life cheerfully, as drops the ripe olive, extolling the season that bore it and the tree that matured it.

Before a science can develop principles, it must possess concepts. Before a law of gravitation could be formulated, it was necessary to have the notions of "acceleration" and "weight."

Weisinger, a couple of years ago, made up the following story: "Isaac Asimov was asked how Superman could fly faster than the speed of light, which was supposed to be an absolute limit. To this Asimov replied, 'That the speed of light is a limit is a theory; that Superman can travel faster than light is a fact.'"

If production be capitalistic in form, so, too, will be reproduction.

A person who already displays ... cruelty to animals is also no less hardened towards men. We can already know the human heart, even in regard to animals.

A mere nothing, a tiny fibre, something that could never be found by the most delicate anatomy, would have made of Erasmus and Fontenelle two idiots, and Fontenelle himself speaks of this very fact in one of his best dialogues.

There are many people who reach their conclusions about life like schoolboys; they cheat their master by copying the answer out of a book without having worked out the sum for themselves.

The trade of insurance gives great security to the fortunes of private people, and by dividing among a great many that loss which would ruin an individual, makes it fall light and easy upon the whole society.

Use these rules then, and trouble thyself about nothing else.

The concept of guilt is found most powerfully developed even in the most primitive communal forms which we know: ... the man is guilty who violates one of the original laws which dominate the society and which are mostly derived from a divine founder; the boy who is accepted into the tribal community and learns its laws, which bind him thenceforth, learns to promise; this promise is often given under the sign of death, which is symbolically carried out on the boy, with a symbolical rebirth.

Human social institutions can effect the course of human evolution. Just as climate-change, food supply, predators, and other natural forces of selection have molded our nature, so too can our culture.

If, when a man writes a poem or commits a murder, the bodily movements involved in his act result solely from physical causes, it would seem absurd to put up a statue to him in the one case and to hang him in the other.

Such religion as there can be in modern life, every individual will have to salvage from the churches for himself.

Thou animated torrid-zone.

To-day is the parent of to-morrow. The present casts its shadow far into the future. That is the law of life, individual and social. Revolution that divests itself of ethical values thereby lays the foundation of injustice, deceit, and oppression for the future society. The means used to prepare the future become its cornerstone.

We seek and offer ourselves to be gulled.