I've had letters from Chinese scientists at the peak of the SARS epidemic who said the problem is a hybridization between the viruses planted into GMO feed, which is then fed to animals, then the virus jumped from the animals to humans. We're going to see more and more of these kinds of risks. I think the whole issue of the H1N1 virus was the fact that it had genes for three influenza types--human, chicken, pig. All of these crossings are becoming possible because of the crossing of genes across species barriers.

A good man with a good conscience doesn't walk so fast.

For legislators make the citizens good by forming habits in them, and this is the wish of every legislator, and those who do not effect it miss their mark, and it is in this that a good constitution differs from a bad one.

A standing army, for instance, is incompatible with freedom; because subordination and rigour are the very sinews of military discipline; and despotism is necessary to give vigour to enterprise that one will directs. A spirit inspired by romantic notions of honour, a kind of morality founded on the fashion of the age, can only be felt by a few officers, whilst the main body must be moved by command, like the waves of the sea; for the strong wind of authority pushes the crowd of subalterns forward, they scarcely know or care why, with headlong fury.

There is rarely a creative man who does not have to pay a high price for the divine spark of his greatest gifts...the human element is frequently bled for the benefit of the creative element and to such an extent that it even brings out the bad qualities, as for instance, ruthless, naive egoism (so-called "auto-eroticism"), vanity, all kinds of vices-and all this in order to bring to the human I at least some life-strength, since otherwise it would perish of sheer inanition.

It is comparatively easy for the philosopher in his closet to invent imaginary schemes of policy, and to shew how mankind, if they were without passions and without prejudices, might best be united in the form of a political community. But, unfortunately, men in all ages are the creatures of passions, perpetually prompting them to defy the rein, and break loose from the dictates of sobriety and speculation.

In the long-run the workman may be as necessary to his master as his master is to him, but the necessity is not so immediate.

If we do not secure the foundation, we cannot secure the edifice.

Parmenides: I was pleased with you, Socrates, because you would not discuss the doubtful question in terms of visible objects or in relation to them, but only with reference to what we conceive most entirely by the intellect and may call ideas… But if you wish to get better training, you must do something more than that; you must consider not only what happens if a particular hypothesis is true, but also what happens if it is not true.

Instead of deciding once in three or six years which member of the ruling class was to misrepresent the people in Parliament, universal suffrage was to serve the people, constituted in Communes, as individual suffrage serves every other employer in the search for the workmen and managers in his business.

We assume that our own advances in objectivity are steps along a path that extends beyond them and beyond all our capacities. But even allowing unlimited time, or an unlimited number of generations, to take as many successive steps as we like, the process can never be completed. ... What is wanted is some way of making the most objective standpoint the basis of action.

It is the preservation of the species, not of individuals, which appears to be the design of Deity throughout the whole of nature.

You need to know at least one foreign language well enough so that you can read the best literature that that language has produced in the original, and so you carry on a reasonable conversation and have dreams in that language. There are several reasons why this is crucial, but the most important is perhaps this: you can never understand one language until you understand at least two.

There is no sorrow in the world, when we have escaped from the fear of death.

Take the question whether other people exist. ...It is plain that it makes for happiness to believe that they exist - for even the greatest misanthropist would not wish to be deprived of the objects of his hate. Hence the belief that other people exist is, pragmatically, a true belief. But if I am troubled by solipsism, the discovery that a belief in the existence of others is 'true' in the pragmatist's sense is not enough to allay my sense of loneliness: the perception that I should profit by rejecting solipsism is not alone sufficient to make me reject it. For what I desire is not that the belief in solipsism should be false in the pragmatic sense, but that other people should in fact exist. And with the pragmatist's meaning of truth, these two do not necessarily go together. The belief in solipsism might be false even if I were the only person or thing in the universe.

He that is to govern a whole Nation, must read in himself, not this, or that particular man; but Mankind; which though it be hard to do, harder than to learn any Language, or Science; yet, when I shall have set down my own reading orderly, and perspicuously, the pains left another, will be only to consider, if he also find not the same in himself. For this kind of Doctrine, admitteth no other Demonstration.

The light will not shame you, if it shows you your own ugliness, and that ugliness so offends you that you perceive the beauty of the light.

From the point of view of the moralist the animal world is on about the same level as a gladiator's show. The creatures are fairly well treated, and set to fight-whereby the strongest, the swiftest and the cunningest live to fight another day. The spectator has no need to turn his thumbs down, as no quarter is given.

Instead of enabling humans to improve their lot, science degrades the natural environment in which humans must live. Instead of enabling death to be overcome, it produces ever more powerful technologies of mass destruction. None of this is the fault of science; what it shows is that science is not sorcery. The growth of knowledge enlarges what humans can do. It cannot reprieve them from being what they are.

A mind that has confronted ruin for years Is half or more a ruined mind.

Religion is the dream of the human mind. But even in dreams we do not find ourselves in emptiness or in heaven, but on earth, in the realm of reality; we only see real things in the entrancing splendor of imagination and caprice, instead of in the simple daylight of reality and necessity.

Every stage of education begins with childhood. That is why the most educated person on earth so much resembles a child.

If the slave-owner of our times has no slave, John, whom he can send to the cesspool, he has five shillings, of which hundreds of such Johns are in such need that the slave-owner of our times may choose any one out of hundreds of Johns and be a benefactor to him by giving him the preference, and allowing him, rather than another, to climb down into the cesspool.

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.

Dionysius the Elder, being asked whether he was at leisure, he replied, "God forbid that it should ever befall me!"

To preserve permanent good health, the state of mind must be taken into consideration.

The skeptic is the least mysterious man in the world, and yet, starting from a certain moment, he no longer belongs to this world.

Private property has made us so stupid and one-sided that an object is only ours when we have it - when it exists for us as capital, or when it is directly possessed, eaten, drunk, worn, inhabited, etc., - in short, when it is used by us. Although private property itself again conceives all these direct realizations of possession as means of life, and the life which they serve as means is the life of private property - labour and conversion into capital. In place of all these physical and mental senses there has therefore come the sheer estrangement of all these senses - the sense of having. The human being had to be reduced to this absolute poverty in order that he might yield his inner wealth to the outer world.

As a philosopher, if I were speaking to a purely philosophic audience I should say that I ought to describe myself as an Agnostic, because I do not think that there is a conclusive argument by which one prove that there is not a God. On the other hand, if I am to convey the right impression to the ordinary man in the street I think that I ought to say that I am an Atheist, because, when I say that I cannot prove that there is not a God, I ought to add equally that I cannot prove that there are not the Homeric gods.

Today war seems to have undergone a change of meaning, insofar as it is not a war of religion but a war of interests, not a war of conflicting cultures or civilizations but a war of national areas, not a war of human beings but a technical struggle of machines one against another and all against the non-combatant population.

The Sophist demonstrates that everything is true and nothing is true.

A character is a completely fashioned will.

Liberating tolerance, then, would mean intolerance against movements from the Right, and toleration of movements from the Left.

Here the institution that compels is the state, the only purpose of which is to protect individuals from one another and the whole from external enemies. Some German philosophasters of this mercenary age would like to twist it into an institution for education and edification in morality; in the background of this lurks the Jesuitical purpose of eliminating personal freedom and the individual's personal development in order to make him into a mere cog in a Chinese machine of state and religion. But this is the path by which in the past one has arrived at the inquisitions, burning of heretics, and religious wars; Frederick the Great's pledge, 'In my country, each shall be able to tend to his salvation in his own fashion', indicated that he never wanted to tread that path.

And therefore just as a brigand caught in broad daylight in the act cannot persuade us that he did not lift his knife in order to rob his victim of his purse, and had no thought of killing him, we too, it would seem, cannot persuade ourselves or others that the soldiers and policemen around us are not to guard us, but only for defense against foreign foes, and to regulate traffic and fetes and reviews; we cannot persuade ourselves and others that we do not know that the men do not like dying of hunger, bereft of the right to gain their subsistence from the earth on which they live; that they do not like working underground, in the water, or in the stifling heat, for ten to fourteen hours a day, at night in factories to manufacture objects for our pleasure. One would imagine it impossible to deny what is so obvious. Yet it is denied.

My faith in human dignity consists in the belief that man is the greatest scamp on earth. Human dignity must be associated with the idea of a scamp and not with that of an obedient, disciplined and regimented soldier.

What really matters is that we should all of us realize that we are guilty of inhumanity. The horror of this realization should shake us out of our lethargy so that we can direct our hopes and our intentions to the coming of an era in which war will have no place.

Computers were within my sphere of attention, but only computers used as number crunchers. In spite of the "giant brain" metaphor, there is little suggestion in this 1950 talk that the most important application of computers might lie in imitating intelligence symbolically, not numerically.

Shall we not perhaps be told, on the other hand, that if the sinner suffers an eternal punishment, it is because he does not cease to sin? - for the damned sin without ceasing. This however is no solution to the problem, which derives all its absurdity from the fact that punishment has been conceived as vindictiveness or vengeance, not as correction, and has been conceived after the fashion of barbarous peoples. And in the same way hell has been conceived as a sort of police institution, necessary in order to put fear into the world. And the worst of it is that it no longer intimidates, and therefore will have to be shut up.

A community is the mental and spiritual condition of knowing that the place is shared, and that the people who share the place define and limit the possibilities of each other's lives. It is the knowledge that people have of each other, their concern for each other, their trust in each other, the freedom with which they come and go among themselves.

There is only one man who gets his own way-he who can get it single-handed; therefore freedom, not power, is the greatest good. That man is truly free who desires what he is able to perform, and does what he desires. This is my fundamental maxim. Apply it to childhood, and all the rules of education spring from it. Society has enfeebled man, not merely by robbing him of the right to his own strength, but still more by making his strength insufficient for his needs. This is why his desires increase in proportion to his weakness; and this is why the child is weaker than the man. If a man is strong and a child is weak it is not because the strength of the one is absolutely greater than the strength of the other, but because the one can naturally provide for himself and the other cannot. Thus the man will have more desires and the child more caprices, a word which means, I take it, desires which are not true needs, desires which can only be satisfied with the help of others.

The will is not free to strive toward whatever is declared good.

For a long time - always, in fact - I have known that life here on earth is not what I needed and that I wasn't able to deal with it; for this reason and for this reason alone, I have acquired a touch of spiritual pride, so that my existence seems to me the degradation and the erosion of a psalm.

The blood of Jesus Christ can cover a multitude of sins, it seems to me.

Let us ask the Gods not for possessions, but for things to do; happiness is in making things rather than consuming them.