The concept of space, therefore, is a pure intuition, being a singular concept, not made up by sensations, but itself the fundamental form of all external sensation.

Show me someone who is ill and yet happy, in danger and yet happy, dying and yet happy, exiled and yet happy. Show me such a person; by the gods, how greatly I long to see a Stoic!

Coition is a slight attack of apoplexy. For man gushes forth from man, and is separated by being torn apart with a kind of blow.

The destiny of the spiritual World, and, - since this is the substantial World, while the physical remains subordinate to it, or, in the language of speculation, has no truth as against the spiritual, - the final cause of the World at large, we allege to be the consciousness of its own freedom on the part of Spirit, and ipso facto, the reality of that freedom.

[T]he first philosophers, in investigating the truth and the nature of things, wandered, as if led by ignorance, into a certain... path. Hence, they say that no being is either generated or corrupted, because it is necessary that what is generated should be generated either from being or non-being: but both these are impossible; for neither can being be generated, since it already is; and from nothing, nothing can be generated... And thus... they said that there were not many things, but that being alone had a subsistence. ...the ancient philosophers ...through this ignorance added so much to their want of knowledge, as to fancy that nothing else was generated or had a being; but they subverted all generation.

Nine-tenths of the activities of a modern Government are harmful; therefore the worse they are performed, the better.

It is the good children, Madame, who make the most terrible revolutionaries. They say nothing, they do not hide under the table, they eat only one sweet at a time, but later on, they make Society pay dearly for it!

Science does not rest upon solid bedrock. The bold structure of its theories arises, as it were, above a swamp. It is like a building erected on piles. The piles are driven down from above into the swamp, but not down to any natural or 'given' base; and if we stop driving the piles deeper, it is not because we have reached firm ground. We simply stop when we are satisfied that the piles are firm enough to carry the structure, at least for the time being.

To be happy, we must not be too concerned with others.

Never read any book that is not a year old.

The immediacy of falling in love recognizes but one immediacy that is ebenburtig (of equal standing), and this is a religious immediacy; falling in love is too virginal to recognize any confidant other than God. But the religious is a new immediacy, has reflection in between-otherwise, paganism would actually be religious and Christianity not. That the religious is a new immediacy every person easily understands who is satisfied with following the honest path of ordinary common sense. And although I imagine I have but few readers, I confess nevertheless that I do imagine my readers to be among these, since I am far from wanting to instruct the admired ones, who make systematic discoveries a la Niels Klim, who have left their good skin in order to put on the “real appearance.

It is the natural effect of improvement, however, to diminish gradually the real price of almost all manufactures.

Any fool can make a ruleAnd every fool will mind it.

When Hobbes referred to the dire state of human beings in having 'nasty, brutish and short' lives, he also pointed, in the same sentence, to the disturbing adversity of being 'solitary'. Escape from isolation may not only be important for the quality of human life, it can also contribute powerfully to understanding and responding to the other deprivations from which human beings suffer. There is surely a basic strength here which is complementary to the engagement in which theories of justice are involved. Amartya Sen, The Idea of Justice, 2009; Ch. 18. Justice and the World

A new word is like a fresh seed sown on the ground of the discussion.

[L]ike Coleridge, he might plead as a set-off that he had been to many persons, through his conversation, a source not only of much instruction but of great elevation of character. On me his influence was most salutary. It was moral in the best sense. He took a sincere and kind interest in me, far beyond what could have been expected towards a mere youth from a man of his age, standing, and what seemed austerity of character. There was in his conversation and demeanour a tone of high-mindedness which did not show itself so much, if the quality existed as much, in any of the other persons with whom at that time I associated. My intercourse with him was the more beneficial, owing to his being of a different mental type from all other intellectual men whom I frequented...

Mediocrity in poets has never been tolerated by either men, or gods, or booksellers.

Truth that has been merely learned is like an artificial limb, a false tooth, a waxen nose; at best, like a nose made out of another's flesh; it adheres to us only because it is put on. But truth acquired by thinking of our own is like a natural limb; it alone really belongs to us. This is the fundamental difference between the thinker and the mere man of learning. The intellectual attainments of a man who thinks for himself resemble a fine painting, where the light and shade are correct, the tone sustained, the colour perfectly harmonised; it is true to life. On the other hand, the intellectual attainments of the mere man of learning are like a large palette, full of all sorts of colours, which at most are systematically arranged, but devoid of harmony, connection and meaning.

Every explanation is after all an hypothesis.

For the lesson of such stories [of resistance to Nazi atrocities] is simple and within everybody's grasp. Politically speaking, it is that under conditions of terror, most people will comply but some people will not, just as the lesson of the countries to which the Final Solution was proposed is that "it could happen" in most places but it did not happen everywhere. Humanly speaking, no more is required, and no more can reasonably be asked, for this planet to remain a place fit for human habitation.

It is our interest and our task to make the revolution permanent until all the more or less propertied classes have been driven from their ruling positions, until the proletariat has conquered state power and until the association of the proletarians has progressed sufficiently far - not only in one country but in all the leading countries of the world - that competition between the proletarians of these countries ceases and at least the decisive forces of production are concentrated in the hands of the workers. Our concern cannot simply be to modify private property, but to abolish it, not to hush up class antagonisms but to abolish classes, not to improve the existing society but to found a new one.

I will follow the good side right to the fire, but not into it if I can help it.

These reasonings are unconnected: "I am richer than you, therefore I am better"; "I am more eloquent than you, therefore I am better." The connection is rather this: "I am richer than you, therefore my property is greater than yours;" "I am more eloquent than you, therefore my style is better than yours." But you, after all, are neither property nor style.

It is very likely that there are many, many planets carrying life, even intelligent life, throughout the universe, because there are so many stars. By sheer chance, even if those chances are small, a great many life forms and a great many intelligences may exist.

Q. You do not consider your statement a disloyal one? A. No, sir. Scientific truth is beyond loyalty and disloyalty. Q. You are sure that your statement represents scientific truth? A. I am.

You must read Plato. But you must hold him at arm's length and say, 'Plato, you have delighted and edified mankind for two thousand years. What have you to say to me?'

Tout existant naît sans raison, se prolonge par faiblesse et meurt par rencontre. Every existing thing is born without reason, prolongs itself out of weakness and dies by chance.

The love of God consists in an ardent desire to procure the general welfare, and reason teaches me that there is nothing which contributes more to the general welfare of mankind than the perfection of reason.

I believe in Christianity as I believe that the sun has risen. Not only because I see it, but because by it I see everything else.

A little folly is desirable in him that will not be guilty of stupidity.

Aristotle, a mere bond-servant to his logic, thereby rendering it contentious and well nigh useless.

Self-trust is the first secret of success.

Thou shalt do no murder, Thou shalt not commit adultery, Thou shalt not steal, Thou shalt not bear false witness, Honour thy father and thy mother: and, Thou shalt love thy neighbour as thyself. 

So that is what hell is. I would never have believed it. You remember: the fire and brimstone, the torture. Ah! the farce. There is no need for torture: Hell is other people.

For whoever has what he has from the God himself clearly has it at first hand; and he who does not have it from the God himself is not a disciple. Let us assume that it is otherwise, that the contemporary generation of disciples had received the condition from the God, and that the subsequent generations were to receive it from these contemporaries, what would follow?

Be of good courage, and if you are discouraged, still take courage over against the various forms of nature. He who has ears to hear, let him hear. Chapter 4.

After death the sensation is either pleasant or there is none at all. But this should be thought on from our youth up, so that we may be indifferent to death, and without this thought no one can be in a tranquil state of mind. For it is certain that we must die, and, for aught we know, this very day. Therefore, since death threatens every hour, how can he who fears it have any steadfastness of soul?

A critique is not a matter of saying that things are not right as they are. It is a matter of pointing out on what kinds of assumptions, what kinds of familiar, unchallenged, unconsidered modes of thought the practices that we accept rest.

Societies are composed of individuals and are good only insofar as they help individuals to realize their potentialities and to lead a happy and creative life.

If anyone can be considered the greatest writer who ever lived, it is Shakespeare.

If children were brought into the world by an act of pure reason alone, would the human race continue to exist? Would not a man rather have so much sympathy with the coming generation as to spare it the burden of existence?

I am a lover of liberty. I will not and I cannot serve a party.

Ideology is not a dreamlike illusion that we build to escape insupportable; in its basic dimension, it is a fantasy-construction which serves as a support for our reality itself; an illusion which structures our effective, real social relations and thereby masks some insupportable, real, impossible kernel.

As to fidelity, there is no animal in the world so treacherous as man. Our histories have recorded the violent pursuits that dogs have made after the murderers of their masters.

No more useful inquiry can be proposed than that which seeks to determine the nature and the scope of human knowledge. ... This investigation should be undertaken once at least in his life by anyone who has the slightest regard for truth, since in pursuing it the true instruments of knowledge and the whole method of inquiry come to light. But nothing seems to me more futile than the conduct of those who boldly dispute about the secrets of nature ... without yet having ever asked even whether human reason is adequate to the solution of these problems.

The effect of music is so very much more powerful and penetrating than is that of the other arts, for these others speak only of the shadow, but music of the essence.

巧言令色、鮮矣仁。 Fine words and an insinuating appearance are seldom associated with true virtue. Variant: Someone who is a clever speaker and maintains a 'too-smiley' face is seldom considered a humane person.

The immediate aim of the Communists is the same as that of all the other proletarian parties: Formation of the proletariat into a class, overthrow of the bourgeois supremacy, conquest of political power by the proletariat.