It's not that there are no differences between human and non-human animals, any more than there are no differences between black people and white people, freeborn citizens and slaves, men and women, Jews and gentiles, gays or heterosexuals. The question is rather: are they morally relevant differences? This matters because morally catastrophic consequences can ensue when we latch on to a real but morally irrelevant difference between sentient beings.

Press on, therefore, as you have begun; perhaps you will be led to perfection, or to a point which you alone understand is still short of perfection.

It is not necessary to ask whether soul and body are one, just as it is not necessary to ask whether the wax and its shape are one, nor generally whether the matter of each thing and that of which it is the matter are one. For even if one and being are spoken of in several ways, what is properly so spoken of is the actuality.

Truths begin by a conflict with the police - and end by calling them in.

An individual who finds that he enjoys seeing others in positions of lesser liberty understands that he has no claim whatever to this enjoyment.

That power should be exercised over any portion of mankind without any obligation of consulting them, is only tolerable while they are in an infantine, or a semi-barbarous state. In any civilized condition, power ought never to be exempt from the necessity of appealing to the reason, and recommending itself by motives which justify it to the conscience and feelings, of the governed.

For he must rule as king until God has put all enemies under his feet. And the last enemy, death, is to be brought to nothing.

In formal logic, a contradiction is the signal of a defeat; but in the evolution of real knowledge it marks the first step in progress towards a victory.

"Let us work without reasoning," said Martin; "it is the only way to make life endurable."

I think that if God forgives us we must forgive ourselves. Otherwise it is almost like setting up ourselves as a higher tribunal than Him.

It is the failing of a certain literature to believe that life is tragic because it is wretched. Life can be magnificent and overwhelming that is its whole tragedy. Without beauty, love, or danger it would be almost easy to live. And M. Sartre's hero does not perhaps give us the real meaning of his anguish when he insists on those aspects of man he finds repugnant, instead of basing his reasons for despair on certain of man's signs of greatness. The realization that life is absurd cannot be an end, but only a beginning. This is a truth nearly all great minds have taken as their starting point. It is not this discovery that is interesting, but the consequences and rules of action drawn from it.

The end of the philosophical dialogue lies in itself; it can never serve a purpose outside of itself. Just as a sculptor does not cease to be a work of art even if it lies at the bottom of the sea, so indeed every work of philosophy endures, even if uncomprehended in its own time. One would be grateful if it were merely a matter of incomprehension. Instead, the work is usually refitted and appropriated by various entities-some playing the part of the opponent; others, that of the proponent.

Meanwhile, hold fast to this thought, and grip it close: yield not to adversity; trust not to prosperity; keep before your eyes the full scope of Fortune's power, as if she would surely do whatever is in her power to do.

Who does not see that we are likely to ascertain the distinctive significance of religious melancholy and happiness, or of religious trances, far better by comparing them as conscientiously as we can with other varieties of melancholy, happiness, and trance, than by refusing to consider their place in any more general series, and treating them as if they were outside of nature's order altogether?

In spite the mountains of books written about art, no precise definition of art has been constructed. And the reason for this is that the conception of art has been based on the conception of beauty.

Technology discloses the active relation of man towards nature, as well as the direct process of production of his very life, and thereby the process of production of his basic societal relations, of his own mentality, and his images of society, too.

Man is always something more than what he knows of himself. He is not what he is simply once and for all, but is a process...

All things are changing; and thou thyself art in continuous mutation and in a manner in continuous destruction and the whole universe to.

The problem is one of opposition between subjective and objective points of view. There is a tendency to seek an objective account of everything before admitting its reality. But often what appears to a more subjective point of view cannot be accounted for in this way. So either the objective conception of the world is incomplete, or the subjective involves illusions that should be rejected.

Great and enduring civilizations like those of the Hindus and the Chinese were built upon this foundation and developed from it a discipline of self-knowledge which they brought to a high pitch of refinement both in philosophy and practice.

We cannot avoid conflict, conflict with society, other individuals and with oneself. Conflicts may be the sources of defeat, lost life and a limitation of our potentiality but they may also lead to greater depth of living and the birth of more far-reaching unities, which flourish in the tensions that engender them.

The need to speak, even if one has nothing to say, becomes more pressing when one has nothing to say, just as the will to live becomes more urgent when life has lost its meaning.

If there were no limits to human rationality administrative theory would be barren. It would consist of the single precept: Always select that alternative, among those available, which will lead to the most complete achievement of your goals.

The blessing that the market does not ask about birth is paid for in the exchange society by the fact that the possibilities conferred by birth are molded to fit the production of goods that can be bought on the market.

The foundation of all technology is fire.

It is the real, and not the map, whose vestiges persist here and there in the deserts that are no longer those of the Empire, but ours: The desert of the real itself.

Nature may certainly produce whatever can arise from habit: Nay, habit is nothing but one of the principles of nature, and derives all its force from that origin.

War is the father and king of all: some he has made gods, and some men; some slaves and some free.

The Idols of Tribe have their foundation in human nature itself, and in the tribe or race of men. For it is a false assertion that the sense of man is the measure of things. On the contrary, all perceptions as well of the sense as of the mind are according to the measure of the individual and not according to the measure of the universe. And the human understanding is like a false mirror, which, receiving rays irregularly, distorts and discolors the nature of things by mingling its own nature with it.

Where is home? I've wondered where home is, and I realized, it's not Mars or someplace like that, it's Indianapolis when I was nine years old. I had a brother and a sister, a cat and a dog, and a mother and a father and uncles and aunts. And there's no way I can get there again.

The wheel may be one of those cases where the engineering solution can be seen in plain view, yet be unattainable in evolution because it lies on the other side of a deep valley, cutting unbridgeably across the massif of Mount Improbable.

The fall of Empire, gentlemen, is a massive thing, however, and not easily fought. It is dictated by a rising bureaucracy, a receding initiative, a freezing of caste, a damming of curiosity, a hundred other factors. It has been going on, as I have said, for centuries, and it is too majestic and massive a movement to stop.

All things are interwoven with one another; a sacred bond unites them; there is scarcely one thing that is isolated from another. Everything is coordinated, everything works together in giving form to one universe. The world-order is a unity made up of multiplicity: God is one, pervading all things; all being is one, all law is one (namely, the common reason which all thinking persons possess) and all truth is one- if, as we believe, there can be but one path to perfection for beings that are alike in kind and reason.

To plead the organic causation of a religious state of mind, then, in refutation of its claim to possess superior spiritual value, is quite illogical and arbitrary, unless one have already worked out in advance some psycho-physical theory connecting spiritual values in general with determinate sorts of physiological change. Otherwise none of our thoughts and feelings, not even our scientific doctrines, not even our dis-beliefs, could retain any value as revelations of the truth, for every one of them without exception flows from the state of their possessor's body at the time.

Far less import than your belief of whether god exists is what you think your belief entails. Does it direct your behaviour by rules and commandments that are set out before you or does it require you to think them through yourself? Does it require you to try to make sense of the world, or does it give up on sense itself? And I think these are the crucial distinctions. Not whether you add belief in a god to them.

Error is the price we pay for progress.

The intellect is at home in that which is fixed only because it is done and over with, for intellect is itself just as much a deposit of past life as is the matter to which it is congenial. Intuition alone articulates in the forward thrust of life and alone lays hold of reality.

Truth is so great a perfection, that if God would render himself visible to men, he would choose light for his body and truth for his soul.

A little of all things, but nothing of everything, after the French manner.

[H]uman nature as encoded in our DNA isn't immutable. Mankind's barbaric track-record to date is an unreliable guide to the future. If Homo sapiens' nastier alleles and their more sinister combinations can be silenced or edited out of the genome, and new improved code-sequences inserted instead, then the pessimists will be confounded. A major discontinuity in the development of life lies ahead. Providentially, we've learned that the DNA-driven world isn't written in God-given proprietary code it would be hubris to tamper with, but in bug-ridden open source amenable to improvement.

For both the pragmatic... and... moral reasons... liberalism became the dominant doctrine of the 20th century, and should... continue to be defended....

If you punish a child for being naughty, and reward him for being good, he will do right merely for the sake of the reward; and when he goes out into the world and finds that goodness is not always rewarded, nor wickedness always punished, he will grow into a man who only thinks about how he may get on in the world, and does right or wrong according as he finds either of advantage to himself.

Neither family, nor privilege, nor wealth, nor anything but Love can light that beacon which a man must steer by when he sets out to live the better life.

When by these steps he has got resolution enough not to be deterr'd from what he ought to do, by the apprehension of danger; when fear does not, in sudden or hazardous occurrences, decompose his mind, set his body a-trembling, and make him unfit for action, or run away from it, he has then the courage of a rational creature: and such an hardiness we should endeavour by custom and use to bring children to, as proper occasions come in our way.

So people should abstain from other animals just as they should from the human.

Alcohol, hashish, prussic acid, strychnine are weak dilutions. The surest poison is time.