As we can not give a general definition of energy, the principle of the conservation of energy signifies simply that there is something which remains constant.

State and government are the social apparatus of violent coercion and repression. Such an apparatus, the police power, is indispensable in order to prevent anti-social individuals and bands from destroying social co-operation. Violent prevention and suppression of anti-social activities benefit the whole of society and each of its members. But violence and oppression are none the less evils and corrupt those in charge of their application. It is necessary to restrict the power of those in office lest they become absolute despots. Society cannot exist without an apparatus of violent coercion. But neither can it exist if the office holders are irresponsible tyrants free to inflict harm upon those they dislike.

The sham cause in physical influence consists in rashly assuming that the commerce of substance and transitive forces is sufficiently knowable from their mere existence. Hence it is not so much a system as rather the neglect of all philosophical system as a superfluity in the argument. Freeing the concept from this defect, we shall have a species of commerce alone deserving to be called real, and from which the whole constituting the world merits being called real, and not ideal or imaginary.

We live, in fact, in a world starved for solitude, silence, and privacy: and therefore starved for meditation and true friendship.

Death's dry bones glowed with light in the erotic darkbut he woke not nor felt the two warm bodies merge;the male worm then took heart and in his wife's ear whispered:"With one sweet kiss, dear wife, we've conquered conquering Death!"

The soldier is applauded who refuses to serve in an unjust war by those who do not refuse to sustain the unjust government which makes the war; is applauded by those whose own act and authority he disregards and sets at naught; as if the state were penitent to that degree that it hired one to scourge it while it sinned, but not to that degree that it left off sinning for a moment.

The good life is one inspired by love and guided by knowledge.

The mind must not be forced; artificial and constrained manners fill it with foolish presumption, through unnatural elevation and vain and ridiculous inflation, instead of solid and vigorous nutriment.

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."

By far the most valuable things, which we know or can imagine, are certain states of consciousness, which may roughly be described as the pleasures of human intercourse and the enjoyment of beautiful objects. No one, probably, who has asked himself the question, has ever doubted that personal affection and the appreciation of what is beautiful in Art or Nature, are good in themselves; nor, if we consider strictly what things are worth having purely for their own sakes, does it appear probable that any one will think that anything else has nearly so much value as the things which are included under these two heads.

The 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.

There may be a rationalist who has never wavered in his conviction of the mortality of the soul, and there may be a vitalist who has never wavered in his faith in immortality; but at the most this would prove that just as there are natural monstrosities, so there are those who are stupid as regards heart and feeling, however great their intelligence, and those who are stupid intellectually, however great their virtue. But, in normal cases, I cannot believe those who assure me that never, not in a fleeting moment, not in the hours of direst loneliness and grief, has this murmur of uncertainty breathed upon their consciousness.

The Outsider cannot accept life as it is, who cannot consider his own existence or anyone else's necessary. He sees 'too deep and too much'. It is still a question of self-expression.

A Parliament speaking through reporters to Buncombe and the twenty-seven millions, mostly fools.

Not to be absolutely certain is, I think, one of the essential things in rationality. 

Even if I could by gradual degrees be transformed into a bat, nothing in my present constitution enables me to imagine what the experiences of such a future stage of myself thus metamorphosed would be like. The best evidence would come from the experience of bats, if we only knew what they were like.

If I have exhausted the justifications, I have reached bedrock and my spade is turned. Then I am inclined to say: "This is simply what I do."

With despair, true optimism begins: the optimism of the man who expects nothing, who knows he has no rights and nothing coming to him, who rejoices in counting on himself alone and in acting alone for the good of all.

Suffering exists only because it was good for our genes. Conditionally-activated negative emotions were fitness-enhancing in the ancestral environment. In the current era, apologists for mental pain are serving as the innocent mouthpieces of the nasty bits of code which spawned them.

Follow me, and I will make you fishers of men.

Just because science so far has failed to explain something, such as consciousness, to say it follows that the facile, pathetic explanations which religion has produced somehow by default must win the argument is really quite ridiculous.

Everything comes in time to him who knows how to wait.

I am using the word "perceive". I am using it here in such a way that to say of an object that it is perceived does not entail saying that it exists in any sense at all. And this is a perfectly correct and familiar usage of the word. If there is thought to be a difficulty here, it is perhaps because there is also a correct and familiar usage of the word "perceive", in which to say of an object that it is perceived does carry the implication that it exists.

Young Schopenhauer, a zealous and thorough-going Kantian, tried to explain that light would cease to exist along with the seeing eye. "What!" he said, according to Schopenhauer's own report, "looking at him with his Jove-like eyes,"-"You should rather say that you would not exist if the light could not see you?"

I believe that world literature has it in its power to help mankind, in these its troubled hours, to see itself as it really is, notwithstanding the indoctrinations of prejudiced people and parties. World literature has it in its power to convey condensed experience from one land to another so that we might cease to be split and dazzled, that the different scales of values might be made to agree, and one nation learn correctly and concisely the true history of another with such strength of recognition and painful awareness as it had itself experienced the same, and thus might it be spared from repeating the same cruel mistakes.

I have observed that even the barbarians across the Rhine sing savage songs composed in language not unlike the croaking of harsh-voiced birds, and that they delight in such songs. For I think it is always the case that inferior musicians, though they annoy their audiences, give very great pleasure to themselves.

Language is a form of organized stutter.

A few centuries from now, if involuntary suffering still exists in the world, the explanation for its persistence won't be that we've run out of computational resources to phase out its biological signature, but rather that rational agents - for reasons unknown - will have chosen to preserve it.

The Upanishads and the Vedas haunt me. In them I have found eternal compensation, unfathomable power, unbroken peace.

Rollers on the beach, wind in the pines, the slow flapping of herons across sand dunes, drown out the hectic rhythms of city and suburb, time tables and schedules. One falls under their spell, relaxes, stretches out prone. One becomes, in fact, like the element on which one lies, flattened by the sea; bare, open, empty as the beach, erased by today's tides of all yesterday's scribblings.

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.

In England women are still occasionally used instead of horses for hauling canal boats, because the labour required to produce horses and machines is an accurately known quantity, while that required to maintain the women of the surplus population is below all calculation.

May they not forget to keep pure the great heritage that puts them ahead of the West: the artistic configuration of life, the simplicity and modesty of personal needs, and the purity and serenity of the Japanese soul.

As Being and Life are one and the same, so are Death and Nothingness one and the same. But there is no real Death and no real Nothing ness, as we have already said. There is, however, an Apparent Life, and this is the mixture of life and death, of being and nothingness.

All natural philosophers, who wished to proceed mathematically in their work, have hence invariably (although unknown to themselves) made use of metaphysical principles, and must make use of such, it matters not how energetically they may otherwise repudiate any claim of metaphysics on their science.

The offender never forgives.

Ideas are cheap. It's only what you do with them that counts.

There is darkness without and when I die there will be darkness within. There is no splendor, nor vastness anywhere; only triviality for a moment and then nothing.

The method of "postulating" what we want has many advantages; they are the same as the advantages of theft over honest toil.

...the more a subject is understood, the more briefly it may be explained.

Much in the study of the paranormal was what we would now call pseudo-science. But the line between science and pseudo-science is smudged and shifting; where it lies seems clear only in retrospect. There is no pristine science untouched by the vagaries of faith.

By this means all knowledge degenerates into probability; and this probability is greater or less, according to our experience of the veracity or deceitfulness of our understanding, and according to the simplicity or intricacy of the question.

Religion, which should most distinguish us from the beasts, and ought most particularly elevate us, as rational creatures, above brutes, is that wherein men often appear most irrational, and more senseless than beasts.

Savage - There is only one way fit for a man - Heroism, or Master-Morality, or Violence. All the other people in between are ploughing the sand.