From a Darwinian point of view, human beliefs are adaptations to our part of the world. No doubt much of what we believe must be roughly accurate, or else we would not have survived. But the beliefs we have evolved might latch on to the world only enough to help us stumble our way through it, and then only for the time being. Human belief-systems could be useful illusions, appearing and disappearing as they prove to be more or less advantageous in the random walk of natural selection. Might not evolution be one of these illusions? Scientific naturalism is the theory that human beliefs are evolutionary adaptations whose survival has nothing to do with their truth. But in that case scientific naturalism is self-defeating, since on its own premises scientific theories cannot be known to be true.

If the importance of science does not lie in its constituting the whole of human knowledge, even less does it lie, in my view, in its technological applications. Science at the best is a way of coming to know, and hopefully a way of acquiring some reverence for, the wonders of nature. The philosophical study of science, at the best, has always been a way of coming to understand both some of the nature and some of the limitations of human reason. These seem to me to be sufficient grounds for taking science and philosophy of science seriously; they do not justify science worship.

Poetry must have something in it that is barbaric, vast and wild.

I suppose it is written that any one who sets up for a bit of a philosopher, must contradict himself to his very face. For here have I fairly talked myself into thinking that we have the whole thing before us at last; that there is no answer to the mystery, except that there are as many as you please; that there is no centre to the maze because, like the famous sphere, its centre is everywhere; and that agreeing to differ with every ceremony of politeness, is the only "one undisturbed song of pure concent" to which we are ever likely to lend our musical voices.

His power to adore is responsible for all his crimes: a man who loves a god unduly forces other men to love his god, eager to exterminate them if they refuse.

Tis the sharpness of our mind that gives the edge to our pains and pleasures.

People will do anything, no matter how absurd, in order to avoid facing their own souls. They will practice Indian yoga and all its exercises, observe a strict regimen of diet, learn the literature of the whole world-all because they cannot get on with themselves and have not the slightest faith that anything useful could ever come out of their own souls. Thus the soul has gradually been turned into a Nazareth from which nothing good can come.

To covet truth is a very distinguished passion.

William James used to preach the "will-to-believe." For my part, I should wish to preach the "will-to-doubt." None of our beliefs are quite true; all at least have a penumbra of vagueness and error. What is wanted is not the will to believe, but the will to find out, which is the exact opposite.

The knowledge of anything, since all things have causes, is not acquired or complete unless it is known by its causes. Therefore in medicine we ought to know the causes of sickness and health. And because health and sickness and their causes are sometimes manifest, and sometimes hidden and not to be comprehended except by the study of symptoms, we must also study the symptoms of health and disease. Now it is established in the sciences that no knowledge is acquired save through the study of its causes and beginnings, if it has had causes and beginnings; nor completed except by knowledge of its accidents and accompanying essentials. Of these causes there are four kinds: material, efficient, formal, and final.

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.

It is necessary to have regard to the person whom we wish to persuade, of whom we must know the mind and the heart, what principles he acknowledges, what things he loves; and then observe in the thing in question what affinity it has with the acknowledged principles, or with the objects so delightful by the pleasure which they give him.

Hegel's philosophy revolved about the universality of reason; it was a rational system with its every part (the subjective as well as the objective spheres) integrated into a comprehensive whole. Marx shows that capitalist society first put such a universality into practice.

I have gained this by philosophy ... I do without being ordered what some are constrained to do by their fear of the law.

The task of universal pragmatics is to identify and reconstruct universal conditions of possible mutual understanding.

God creates out of nothing. Wonderful you say. Yes, to be sure, but He does what is still more wonderful: He makes saints out of sinners.

Why dost thou not retire like a guest sated with the banquet of life, and with calm mind embrace, thou fool, a rest that knows no care?

No one should forget: Eros alone can fulfill life; knowledge, never. Only Eros makes sense; knowledge is empty infinity; - for thoughts, there is always time; life has its time; there is no thought that comes too late; any desire can become a regret.

I shall cheerfully bear the reproach of having descended below the dignity of history if I can succeed in placing before the English of the nineteenth century a true picture of the life of their ancestors.

I knew a parson who frightened his congregation terribly by telling them that the second coming was very imminent indeed, but they were much consoled when they found that he was planting trees in his garden.

Do not let habit, born from experience, force you along this road, directing aimless eye and echoing ear and tongue; but judge by reason the much contested proof which I have spoken.

I believe that the advance of science depends upon the free competition of thought, and thus upon freedom, and that it must come to an end if freedom is destroyed (though it may well continue for some time in some fields, especially in technology).

He was a man born into a world dominated by scientific materialism. His objection to this materialism was not merely intellectual, or even egotistical (the feeling 'If the world is wholly material, then I can't be very important'). It was the feeling that man is cut off from his inner powers by this superficial attitude.

A person who wakes up after a night of unbroken sleep has the illusion of beginning something new. When one instead remains awake the whole night long, nothing new begins.

Every human being is the natural guardian of his own importance.

Evils draw men together.

Without effort and change, human life cannot remain good. It is not a finished Utopia that we ought to desire, but a world where imagination and hope are alive and active.

There are no whole truths; all truths are half-truths. It is trying to treat them as whole truths that plays the devil.

If there are different Notions of the science of Philosophy, it is the true Notion alone that puts us in a position to understand the writings of philosophers who have worked in the knowledge of it. For in thought, and particularly in speculative thought, comprehension means something quite different from understanding the grammatical sense of the words alone, and also from understanding them in the region of ordinary conception only. Hence we may possess a knowledge of the assertions, propositions, or of the opinions of philosophers; we may have occupied ourselves largely with the grounds of and deductions from these opinions, and the main point in all that we have done may be wanting - the comprehension of the propositions.

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.

Buddhism is the most colossal example in the history of applied metaphysics.

Any one thing in the creation is sufficient to demonstrate a Providence to an humble and grateful mind.

All mankind, right down to those you most despise, are your neighbors.

We cannot suppose that an individual's thinking survives bodily death, since that destroys the organization of the brain and dissipates the energy which utilized the brain tracks. God and immortality, the central dogma of the Christian religion, find no support in science. But we in the West have come to think of them as the irreducible minimum of theology. No doubt people will continue to entertain these beliefs, because they are pleasant, just as it is pleasant to think ourselves virtuous and our enemies wicked. But for my part I cannot see any grounds for either. I do not pretend to be able to prove that there is no God. I equally cannot prove Satan is a fiction. The Christian God may exist, so might the Gods of Olympus, Ancient Egypt or Babylon; but no one of these hypotheses is more probable than any other. They lie outside the region of provable knowledge and there is no reason to consider any of them.

It is written, My house shall be called the house of prayer; but ye have made it a den of thieves.

In every rebellion is to be found the metaphysical demand for unity, the impossibility of capturing it, and the construction of a substitute universe.

With the sense of sight, the idea communicates the emotion, whereas, with sound, the emotion communicates the idea, which is more direct and therefore more powerful.

Wrongly do the Greeks suppose that aught begins or ceases to be; for nothing comes into being or is destroyed; but all is an aggregation or secretion of pre-existent things: so that all-becoming might more correctly be called becoming-mixed, and all corruption, becoming-separate.

As incompetent in life as in death, I loathe myself and in this loathing I dream of another life, another death. And for having sought to be a sage such as never was, I am only a madman among the mad.

These considerations did not make us overlook the folly of premature attempts to dispense with the inducements of private interest in social affairs, while no substitute for them has been or can be provided: but we regarded all existing institutions and social arrangements as being (in a phrase I once heard from Austin) "merely provisional," and we welcomed with the greatest pleasure and interest all socialistic experiments by select individuals (such as the Co-operative Societies), which, whether they succeeded or failed, could not but operate as a most useful education of those who took part in them, by cultivating their capacity of acting upon motives pointing directly to the general good, or making them aware of the defects which render them and others incapable of doing so.

The commonest and cheapest sounds, as the barking of a dog, produce the same effect on fresh and healthy ears that the rarest music does. It depends on your appetite for sound. Just as a crust is sweeter to a healthy appetite than confectionery to a pampered or diseased one.

Undoubtedly we have no questions to ask which are unanswerable. We must trust the perfection of the creation so far, as to believe that whatever curiosity the order of things has awakened in our minds, the order of things can satisfy. Every man's condition is a solution in hieroglyphic to those inquiries he would put. He acts it as life, before he apprehends it as truth.

One may be humble out of pride.

Woman is degraded and made to believe that nature destined her exclusively to menial domestic labors, which in the combined order will be so abridged as to be performed without oppression to either sex.

The society which projects and undertakes the technological transformation of nature alters the base of domination by gradually replacing personal dependence (of the slave on the master, the serf on the lord of the manor, the lord on the donor of the fief, etc.) with dependence on the "objective order of things" (on economic laws, the market etc.).

A dangerous form of psychological splitting had to have taken place, and it continues to take place, in the psyches of many African Americans who can on one hand oppose racism, and then on the other hand passively absorb ways of thinking about beauty that are rooted in white supremacist thought.