There are two equal and opposite errors into which our race can fall about the devils. One is to disbelieve in their existence. The other is to believe, and to feel an excessive and unhealthy interest in them. They themselves are equally pleased by both errors and hail a materialist or a magician with the same delight.

The ceaseless labour of your life is to build the house of death.

Man should possess an infinite appetite for life. It should be self-evident to him, all the time, that life is superb, glorious, endlessly rich, infinitely desirable. At present, because he is in a midway position between the brute and the truly human, he is always getting bored, depressed, weary of life. He has become so top-heavy with civilisation that he cannot contact the springs of pure vitality. Control of the prefrontal cortex will change all of this. He will cease to cast nostalgic glances towards the womb, for he will realise that death is no escape. Man is a creature of life and the daylight; his destiny lies in total objectivity.

To my complete surprise, that exposure to out-of-date scientific theory and practice radically undermined some of my basic conceptions about the nature of science and the reasons for its special success.Those conceptions were ones I had previously drawn partly from scientific training itself and partly from a long-standing avocational interest in the philosophy of science. Somehow, whatever their pedagogic utility and their abstract plausibility, those notions did not at all fit the enterprise that historical study displayed. Yet they were and are fundamental to many discussions of science, and their failures of verisimilitude therefore seemed thoroughly worth pursuing. The result was a drastic shift in my career plans, a shift from physics to history of science and then, gradually, from relatively straightforward historical problems back to the more philosophical concerns that had initially led me to history.

Pleasant it is, when over a great sea the winds trouble the waters, to gaze from shore upon another's great tribulation: not because any man's troubles are a delectable joy, but because to perceive from what ills you are free yourself is pleasant.

Whenever our neighbour's house is on fire, it cannot be amiss for the engines to play a little on our own.

Think not so much of what thou hast not as of what thou hast: but of the things which thou hast, select the best, and then reflect how eagerly they would have been sought, if thou hadst them not. At the same time, however, take care that thou dost not, through being so pleased with them, accustom thyself to overvalue them, so as to be disturbed if ever thou shouldst not have them.

The devil, depend upon it, can sometimes do a very gentlemanly thing.

Once the philosophical foundation of democracy has collapsed, the statement that dictatorship is bad is rationally valid only for those who are not its beneficiaries, and there is no theoretical obstacle to the transformation of this statement into its opposite.

A whole from necessary substances is impossible. The whole, therefore, of substances is a whole of contingent things, and the world consists essentially of only contingent things.

We do not have to love one another to be obligated to build a world in which all lives are sustainable. The right to persist can only be understood as a social right, as the subjective instance of a social and global obligation we bear toward one another.

The inner trip is not the sole prerogative of the LSD traveler; it's the universal experience of TV watchers.

We are all sprung from a heavenly seed.

Though I myself am an atheist, I openly profess religion in the sense just mentioned, that is, a nature religion. I hate the idealism that wrenches man out of nature; I am not ashamed of my dependency on nature; I openly confess that the workings of nature affect not only my surface, my skin, my body, but also my core, my innermost being, that the air I breathe in bright weather has a salutary effect not only on my lungs but also on my mind, that the light of the sun illumines not only my eyes but also my spirit and my heart. And I do not, like a Christian, believe that such dependency is contrary to my true being or hope to be delivered from it. I know further that I am a finite moral being, that I shall one day cease to be. But I find this very natural and am therefore perfectly reconciled to the thought.

To choose this or that is to affirm at the same time the value of what we choose, because we can never choose evil. We always choose the good, and nothing can be good for us without being good for all.

By Natura naturans we must understand what is in itself and is conceived through itself, or such attributes of substance as express an eternal and infinite essence, that is ... God, insofar as he is considered as a free cause. But by Natura naturata I understand whatever follows from the necessity of God's nature, or from God's attributes, that is, all the modes of God's attributes insofar as they are considered as things which are in God, and can neither be nor be conceived without God.

You need to know enough philosophy so that the methods of logical analysis are available to you to be used as a tool. One of the most depressing things about educated people today is that so few of them, even among professional intellectuals, are able to follow the steps of a simple logical argument.

The case of mere titles is so absurd that it would deserve to be treated only with ridicule were t not for the serious mischief they impose on mankind. The feudal system was a ferocious monster, devouring, where it came, all that the friend of humanity regards with attachment and love. The system of titles appears under a different form. The monster is at length destroyed, and they who followed in his train, and fattened upon the carcasses of those he slew, have stuffed his skin, and, b exhibiting it, hope still to terrify mankind into patient and pusillanimity.

With his sharp power of vision, resolute power of action, I doubt not he could have learned to write Books withal, and speak fluently enough;-he did harder things than writing of Books. This kind of man is precisely he who is fit for doing manfully all things you will set him on doing.

Now his principal doctrines were these. That atoms and the vacuum were the beginning of the universe; and that everything else existed only in opinion.

We are far more liable to catch the vices than the virtues of our associates.

Nature forms us for ourselves, not for others; to be, not to seem.

Every genuine work of art has as much reason for being as the earth and the sun.

God!' said the Ghost, glancing around the landscape. 'God what?' asked the Spirit. 'What do you mean, "God what"?' asked the Ghost. 'In our grammar God is a noun' said the Spirit.

In the Koran as in the Bible, politics is divinized, and human reason, crushed by the religious ascendancy, cannot insinuate its isolating and corrosive poison into the mechanisms of government, so that citizens are believers whose loyalty is exalted to faith, and obedience to enthusiasm and fanaticism.

The abolition of private property has become not only possible but absolutely necessary. ... The outcome can only be the victory of the proletariat.

Life cannot wait until the sciences may have explained the universe scientifically. We cannot put off living until we are ready. The most salient characteristic of life is its coerciveness: it is always urgent, "here and now" without any possible postponement. Life is fired at us point-blank. And culture, which is but its interpretation, cannot wait any more than can life itself.

...they cudgel their brains with absurd questions, such as, for instance, why God did not make the world many centuries earlier. They persuade themselves that it is easy to conceive, to be sure, how God may discern what is present, that is, what is actual in the time in which he is, but how He may foresee what is future, that is, what is actual in the time in which He is not yet, they deem an intellectual difficulty; as if the existence of the Necessary Being descended through all the moments of an imaginary time, and, having already exhausted a part of His duration, saw before Him the eternity He was yet to live simultaneously with the present events of the world. All these difficulties upon proper insight into the notion of time vanish like smoke.

The presence of a thought is like the presence of a lover.

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 precise reason why abstinence from animal food will be the first act ... of a moral life is admirably explained in the book, The Ethics of Diet [by Howard Williams]; and not by one man only, but by all mankind in the persons of its best representatives during all the conscious life of humanity. ... the moral progress of humanity - which is the foundation of every other kind of progress - is always slow; but ... the sign of true, not casual, progress is its uninterruptedness and its continual acceleration. And the progress of vegetarianism is of this kind. That progress, is expressed both in the words of the writers cited in the above-mentioned book and in the actual life of mankind, which from many causes is involuntarily passing metre and more from carnivorous habits to vegetable food, and is also deliberately following the same path in a movement which shows evident strength, and which is growing larger and larger - viz., vegetarianism.

If a person gave your body to any stranger he met on his way, you would certainly be angry. And do you feel no shame in handing over your own mind to be confused and mystified by anyone who happens to verbally attack you?

Equality, proclaimed in 1793, has been one of the greatest conquests of the French Revolution. Despite all the reactions which have arrived since, that great principle has triumphed in the political economy of Europe. In the most advanced countries, it is called the equality of politic rights; in the other countries, civil equality - equality before the law. No country in Europe would dare to openly proclaim today the principle of political inequality. But the history of the revolution itself and that of the seventy-five years that have passed since, we prove that political equality without economic equality is a lie. You would proclaim in vain the equality of political rights, as long as society remains split by its economic organization into socially different layers - that equality will be nothing but a fiction.

In Deductive Reasoning, we cannot have any truth in the conclusion which is not virtually contained in the premises.

The nuclear bomb will turn warfare into the juggling of images.

Know the joy of life by piling good deed on good deed until no rift or cranny appears between them.

Perhaps, if prematurely we dismiss ourselves from this world, all may even have to be suffered through again - the premature birth may not contribute to the production of another being, which must be begun again from the beginning.

From the point of view of semantics, errors must be accidents: if in the extension of "horse" there are no cows, then it cannot be required for the meaning of "horse" that cows be called horses. On the other hand, if "horse" did not mean that which it means, and if it were an error for horses, it would never be possible for a cow to be called "horse." Putting the two things together, it can be seen that the possibility of falsely saying "this is a horse" presupposes the existence of a semantic basis for saying it truly, but not vice versa. If we put this in terms of the crude causal theory, the fact that cows cause one to say "horse" depends on the fact that horses cause one to say "horse"; but the fact that horses cause one to say "horse" does not depend on the fact that cows cause one to say "horse"...

A fair exterior is a silent recommendation.

He sees as well as you do that courage is not simply one of the virtues, but the form of every virtue at the testing point, which means, at the point of highest reality. A chastity or honesty, or mercy, which yields to danger will be chaste or honest or merciful only on conditions.

So-called professional mathematicians have, in their reliance on the relative incapacity of the rest of mankind, acquired for themselves a reputation for profundity very similar to the reputation for sanctity possessed by theologians.

Consciousness is what makes the mind-body problem really intractable.

'Natural History' ought to form a part of intellectual education, in order to correct certain prejudices which arise from cultivating the intellect by means of mathematics alone and in order to lead the student to see that the division of things into kinds, and the attribution and use of names, are processes susceptible of great precision.

The ontological concept of truth is in the centre of a logic which may serve as a model of pre- technological rationality. It is the rationality of a two-dimensional universe of discourse which, contrasts with the of thought and behavior that develop in the execution of the technological project.

The modern state, in its essence and objectives, is necessarily a military state, and a military state necessarily becomes an aggressive state. If it does not conquer others it will itself be conquered, for the simple reason that wherever force exists, it absolutely must be displayed or put into action. From this again it follows that the modern state must without fail be huge and powerful; that is the indispensable condition for its preservation.

America had declared war with Spain.... It did not require much political wisdom to see that America's concern was a matter of sugar and had nothing to do with humanitarian feelings. Of course there were plenty of credulous people, not only in the country at large, but even in liberal ranks, who believed in America's claim. I could not join them. I was sure that no one, be it individual or government, engaged in enslaving and exploiting at home, could have the integrity or the desire to free people in other lands.

Utopia is a meta-utopia: the environment in which Utopian experiments may be tried out; the environment in which people are free to do their own thing; the environment which must, to a great extent, be realized first if more particular Utopian visions are to be realized stably.