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

The worst of my actions or conditions seem not so ugly unto me as I find it both ugly and base not to dare to avouch for them.

Why don't I kill myself? If I knew exactly what keeps me from doing so, I should have no more questions to ask myself since I should have answered them all.

A tragedy, then, is the imitation of an action that is serious and also, as having magnitude, complete in itself; in language ... not in a narrative form; with incidents arousing pity and fear, wherewith to accomplish its catharsis of such emotions.

What is patriotism? Is it love of one's birthplace, the place of childhood's recollections and hopes, dreams and aspirations? Is it the place where, in childlike naïveté, we would watch the passing clouds, and wonder why we, too, could not float so swiftly? The place where we would count the milliard glittering stars, terror-stricken lest each one "an eye should be," piercing the very depths of our little souls?

The vocation of every man and woman is to serve other people.

Love's great (and sole) originality is to make happiness indistinct from misery.

The spirit of Poesy is the morning light, which makes the Statue of Memnon sound.

On est ce qu'on veut. A man is what he wills himself to be.

There is hardly a philosophy which has not invoked something like the will or desire to know, the love of truth, etcetera. But, in truth, very few philosophers-apart, perhaps, from Spinoza and Schopenhauer-have accorded it more than a marginal status; as if there was no need for philosophy to say first of all what the name that it bears actually refers to. As if placing at the head of its discourse the desire to know, which it repeats in its name, was enough to justify its own existence and show-at a stroke-that it is necessary and natural: All men desire to know. Who, then, is not a philosopher, and how could philosophy not be the most necessary thing in the world?

If the stars should appear one night in a thousand years, how would men believe and adore, and preserve for many generations the remembrance of the city of God which had been shown! But every night come out these envoys of beauty, and light the universe with their admonishing smile.

On the whole, Borne, Heine, Feuerbach, and such authors are the individualities who have great interest for someone who is composing an imaginary construction. They frequently are well informed about the religious-that is, they know definitely that they do not want to have anything to do with it. This is a great advantage over the systematicians, who without knowing where the religious really is located take it upon themselves to explain it-sometimes obsequiously, sometimes superciliously, but always unsuccessfully.

Even if the whole world were to fall to pieces, the unity of the psyche would never be shattered. And the wider and more numerous the fissures on the surface, the more the unity is strengthened in the depths.

It is too difficult to think nobly when one thinks only of earning a living. 

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. 

Predicting the future is a hopeless, thankless task, with ridicule to begin with and, all too often, scorn to end with.

The happiness which belongs to man, is that state in which he enjoys as many of the good things, and suffers as few of the evils incident to human nature as possible; passing his days in a smooth course of permanent tranquility. A wise man, though deprived of sight or hearing, may experience happiness in the enjoyment of the good things which yet remain; and when suffering torture, or laboring under some painful disease, can mitigate the anguish by patience, and can enjoy, in his afflictions, the consciousness of his own constancy.

For the first time in sixty years, the priests, the old aristocracy and the people met in a common sentiment-a feeling of revenge, it is true, and not of affection; but even that is a great thing in politics, where a community of hatred is almost always the foundation of friendships.

Once animals had a more sacred, more divine character than men. There is not even a reign of the "human" in primitive societies, and for a long time the animal order has been the order of reference. Only the animal is worth being sacrificed, as a god, the sacrifice of man only comes afterward, according to a degraded order. Men qualify only by their affiliation to the animal: the Bororos "are" macaws. "

Till society is very differently constituted, parents, I fear, will still insist on being obeyed, because they will be obeyed, and constantly endeavour to settle that power on a Divine right, which will not bear the investigation of reason.

Our inventions are wont to be pretty toys, which distract our attention from serious things. They are but improved means to an unimproved end, an end which it was already but too easy to arrive at.

Man is a universe in little [Microcosm].

The soul, too, has her virginity and must bleed a little before bearing fruit.

The infinite... happens to subsist in a way contrary to what is asserted by others: for the infinite is not that beyond which there is nothing, but it is that of which there is always something beyond. ...But that pertaining to which there is nothing beyond is perfect and whole. ...that of which nothing is absent pertaining to the parts ...the whole is that pertaining to which there is nothing beyond. But that pertaining to which something external is absent, that is not all ...But nothing is perfect which has not an end; and the end is a bound. On this account... Parmenides spoke better than Melissus: for the latter says that the infinite is a whole; but the former, that the whole is finite, and equally balanced from the middle: for to conjoin the infinite with the universe and the whole, is not to connect line with line.

When the throne of God is overturned, the rebel realizes that it is now his own responsibility to create the justice, order, and unity that he sought in vain within his own condition, and in this way to justify the fall of God. Then begins the desperate effort to create, at the price of crime and murder if necessary, the dominion of man.

If any one hearken with understanding to these sayings of mine many a deed worthy of a good man shall he perform and many a foolish deed be spared.

To err is human also in so far as animals seldom or never err, or at least only the cleverest of them do so.

If by enlightenment and intellectual progress we mean the freeing of man from superstitious belief in evil forces, in demons and fairies, in blind fate-in short, emancipation of fear-then denunciation of what is currently called reason is the greatest service reason can render.

There was a time when religion was kept secret from popular belief within the mystery cults like a holy fire, sharing a common sanctuary with philosophy. The legends of antiquity name the earliest philosophers as the originators of these mystery cults, from which the most enlightened among the later philosophers, notably Plato, liked to educe their divine teachings. At that time philosophers still had the courage and the right to discuss the singly great themes, the only ones worthy of philosophizing and rising above common knowledge.

The truth is sum, ergo cogito - I am, therefore I think, although not everything that is thinks. Is not consciousness of thinking above all consciousness of being? Is pure thought possible, without consciousness of self, without personality? Can there exist pure knowledge without feeling, without that species of materiality which feelings lends to it? Do we not perhaps feel thought, and do we not feel ourselves in the act of knowing and willing? Could not the man in the stove [Descartes] have said: "I feel, therefore I am"? or "I will, therefore I am"? And to feel oneself, is it not perhaps to feel oneself imperishable?

It is understandable then that tragic heroes, unlike the baroque characters who had preceded them, could never be mad, and that inversely madness could never take on the tragic value we have known since Nietzsche and Artaud. In the classical epoch, tragic characters and the mad face each other without any possible dialogue or common language, for the one can only pronounce the decisive language of being, where the truth of light and the depths of night meet in a flash, and the other repeats endlessly an indifferent murmur where the empty chatter of the day is cancelled out by the deceptive lies of the shadows.

The blame rests with the government. Why do they not put adulterers to death? Then I would not need to give such advice. Between two evils one is always the lesser, in this case allowing the adulterer to remarry in a distant land in order to avoid fornication . . .

In public, as well as in private expences, great wealth may, perhaps, frequently be admitted as an apology for great folly.

I remember well a junior seminar I gave with Paul Tillich shortly before the outbreak of the Third Reich. A participant spoke out against the idea of the meaning of existence. She said life did not seem very meaningful to her and she didn't know whether it had a meaning. The very voluble Nazi contingent became very excited by this and scraped the floor noisily with their feet. Now, I do not wish to maintain that this Nazi foot-shuffling proves or refutes anything in particular, but I do find it highly significant. I would say it is a touchstone for the relation of thinking to freedom. It raises the question whether thought can bear the idea that a given reality is meaningless and that mind is unable to orientate itself; or whether the intellect has become so enfeebled that it finds itself paralysed by the idea that all is not well with the world.

A person who wakes up after a night of unbroken sleep has the illusion of beginning something new. When one instead remains awake the whole night long, nothing new begins.

There is nothing impossible in the existence of the supernatural: its existence seems to me decidedly probable.

In this third period (as it may be termed) of my mental progress, which now went hand in hand with hers, my opinions gained equally in breadth and depth, I understood more things, and those which I had understood before, I now understood more thoroughly. I had now completely turned back from what there had been of excess in my reaction against Benthamism. I had, at the height of that reaction, certainly become much more indulgent to the common opinions of society and the world, and more willing to be content with seconding the superficial improvement which had begun to take place in those common opinions, than became one whose convictions on so many points, differed fundamentally from them. I was much more inclined, than I can now approve, to put in abeyance the more decidedly heretical part of my opinions, which I now look upon as almost the only ones, the assertion of which tends in any way to regenerate society.

Strange incongruities must ever perplex those, who confound the unhappiness of civil dissensions with the crime of treason.

I think so badly of philosophy that I don't like to talk about it. ... I do not want to say anything bad about my dear colleagues, but the profession of teacher of philosophy is a ridiculous one. We don't need a thousand of trained, and badly trained, philosophers - it is very silly. Actually most of them have nothing to say.

The assertion fallacy ... is the fallacy of confusing the conditions for the performance of the speech act of assertion with the analysis of the meaning of particular words occurring in certain assertions.

The dominion of bad men is hurtful chiefly to themselves who rule, for they destroy their own souls by greater license in wickedness; while those who are put under them in service are not hurt except by their own iniquity. For to the just all the evils imposed on them by unjust rulers are not the punishment of crime, but the test of virtue. Therefore the good man, although he is a slave, is free; but the bad man, even if he reigns, is a slave, and that not of one man, but, what is far more grievous, of as many masters as he has vices; of which vices when the divine Scripture treats, it says, For of whom any man is overcome, to the same he is also the bond-slave.

The origin of our passions, the root and spring of all the rest, the only one which is born with man, which never leaves him as long as he lives, is self-love; this passion is primitive, instinctive, it precedes all the rest, which are in a sense only modifications of it. In this sense, if you like, they are all natural. But most of these modifications are the result of external influences, without which they would never occur, and such modifications, far from being advantageous to us, are harmful. They change the original purpose and work against its end; then it is that man finds himself outside nature and at strife with himself.

A purely disembodied human emotion is a nonentity.

The surest means of not losing your mind on the spot: remembering that everything is unreal, and will remain so...

Lead, follow, or get out of the way.

Once the needs of hunger are satisfied - and they are soon satisfied - the vanity, the necessity - for it is a necessity - arises of imposing ourselves upon and surviving in others. Man habitually sacrifices his life to his purse, but he sacrifices his purse to his vanity. He boasts even of his weakness and his misfortunes, for want of anything better to boast of, and is like a child who, in order to attract attention, struts about with a bandaged finger.

One common strategy on which we should all be able to agree is to take steps to reduce the risk of human extinction when those steps are also highly effective in benefiting existing sentient beings. For example, eliminating or decreasing the consumption of animal products will benefit animals, reduce greenhouse gas emissions, and lessen the chances of a pandemic resulting from a virus evolving among the animals crowded into today's factory farms, which are an ideal breeding ground for viruses. That therefore looks like a high-priority strategy.

There are clear cases in which "understanding" literally applies and clear cases in which it does not apply; and these two sorts of cases are all I need for this argument.

Whoever is versed in the jargon does not have to say what he thinks, does not even have to think it properly. The jargon takes over this task.