Art is a jealous mistress.

Lastly, there are Idols which have immigrated into men's minds from the various dogmas of philosophies, and also from wrong laws of demonstration. These I call Idols of the Theater, because in my judgment all the received systems are but so many stage plays, representing worlds of their own creation after an unreal and scenic fashion.

Consider what effects that might conceivably have practical bearings you conceive the objects of your conception to have. Then, your conception of those effects is the whole of your conception of the object.

Courtesy is a science of the highest importance. It is, like grace and beauty in the body, which charm at first sight, and lead on to further intimacy and friendship, opening a door that we may derive instruction from the example of others, and at the same time enabling us to benefit them by our example, if there be anything in our character worthy of imitation.

God may forgive sins, he said, but awkwardness has no forgiveness in heaven or earth.

If you don't want to explode with rage, leave your memory alone, abstain from burrowing there.

Mathematical Analysis is... the true rational basis of the whole system of our positive knowledge.

Macaulay is like a book in breeches...He has occasional flashes of silence, that make his conversation perfectly delightful.

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.

Mathematics have a triple aim. They must furnish an instrument for the study of nature. But that is not all: they have a philosophic aim and, I dare maintain, an esthetic aim. They must aid the philosopher to fathom the notions of number, of space, of time. And above all, their adepts find therein delights analogous to those given by painting and music. They admire the delicate harmony of numbers and forms; they marvel when a new discovery opens to them an unexpected perspective; and has not the joy they thus feel the esthetic character, even though the senses take no part therein? Only a privileged few are called to enjoy it fully, it is true, but is not this the case for all the noblest arts?This is why I do not hesitate to say that mathematics deserve to be cultivated for their own sake, and the theories inapplicable to physics as well as the others. Even if the physical aim and the esthetic aim were not united, we ought not to sacrifice either.

It is necessary to show that there is nothing so little known [as the above rules], nothing more difficult to practice, or nothing more useful and universal.

That there should one Man die ignorant who had capacity for Knowledge, this I call a tragedy.

Time! Time! Time! - we must not impugn the Scripture Chronology, but we must interpret it in accordance with whatever shall appear on fair enquiry to be the truth for there cannot be two truths. And really there is scope enough: for the lives of the Patriarchs may as reasonably be extended to 5000 or 50000 years apiece as the days of Creation to as many thousand millions of years.

Europeans are awakening more and more to a sense that beasts have rights, in proportion as the strange notion is being gradually overcome and outgrown, that the animal kingdom came into existence solely for the benefit and pleasure of man. This view, with the corollary that non-human living creatures are to be regarded merely as things, is at the root of the rough and altogether reckless treatment of them, which obtains in the West.

since our leading men think themselves in a seventh heaven, if there are bearded mullets in their fish-ponds that will come to hand for food, and neglect everything else, do not you think that I am doing no mean service if I secure that those who have the power, should not have the will, to do any harm?

Evil destroyeth itself.

The mosaic form of the TV image demands participation and involvement in depth, of the whole being, as does the sense of touch.

We cannot overstate our debt to the Past, but the moment has the supreme claim. The Past is for us; but the sole terms on which it can become ours are its subordination to the Present. Only an inventor knows how to borrow, and every man is or should be an inventor. We must not tamper with the organic motion of the soul.

It is remarkable that among all the preachers there are so few moral teachers. The prophets are employed in excusing the ways of men.

When you close your doors, and make darkness within, remember never to say that you are alone, for you are not alone; nay, God is within, and your genius is within. And what need have they of light to see what you are doing?

I was aggressively nonpolitical. I believed that people who make a fuss about politics do so because their heads are too empty to think about more important things. So I felt nothing but impatient contempt for Osborne's Jimmy Porter and the rest of the heroes of social protest.

An absolute power would be one that never becomes apparent, never pointed to itself, one that rather blended completely into what goes without saying. Power shines in its own absence.

...wickedness, when you examine it, turns out to be the pursuit of some good in the wrong way. You can be good for the mere sake of goodness: you cannot be bad for the mere sake of badness. You can do a kind action when you are not feeling kind and when it gives you no pleasure, simply because kindness is right; but no one ever did a cruel action simply because cruelty is wrong - only because cruelty was pleasant or useful to him. in other words badness cannot succeed even in being bad in the same way in which goodness is good. Goodness is, so to speak, itself: badness is only spoiled goodness.

We seek and offer ourselves to be gulled.

The theoretical understanding of the world, which is the aim of philosophy, is not a matter of great practical importance to animals, or to savages, or even to most civilized men.

Just sit back and listen to some of the clamorous grievances against the contemporary global system. Our list does not pretend to be comprehensive, and the partiality of its selections will undoubtedly reveal our own blindnesses, but it should nonetheless give a sense of the range and depth of today's grievances.

If you can speak what you will never hear, if you can write what you will never read, you have done rare things.

Put an end once for all to this discussion of what a good man should be, and be one.

In the late eighteenth and the greater part of the nineteenth centuries appeared the first marked cultural shift in the attitude taken toward change. Under the names of indefinite perfectibility, progress, and evolution, the movement of things in the universe itself and of the universe as a whole began to take on a beneficent instead of hateful aspect.

Let your occupations be few, says the sage, "if you would lead a tranquil life."

No doubt a tumult caused by local and temporary irritation ought to be suppressed with promptitude and vigour. Such disturbances, for example, as those which Lord George Gordon raised in 1780, should be instantly put down with the strong hand. But woe to the Government which cannot distinguish between a nation and a mob! Woe to the Government which thinks that a great, a steady, a long continued movement of the public mind is to be stopped like a street riot! This error has been twice fatal to the great House of Bourbon. God be praised, our rulers have been wiser. The golden opportunity which, if once suffered to escape, might never have been retrieved, has been seized. Nothing, I firmly believe, can now prevent the passing of this noble law, this second Bill of Rights.

There is a contrast of primary significance between Augustine and Pelagius. The former crushes everything in order to rebuild it again. The other addresses himself to man as he is. The first system, therefore, in respect to Christianity, falls into three stages: creation – the fall and a consequent condition of death and impotence; a new creation - whereby man is placed in a position where he can choose; and then, if he chooses - Christianity. The other system addresses itself to man as he is (Christianity fits into the world). From this is seen the significance of the theory of inspiration for the first system; from this also is seen the relationship between the synergistic and the semipelagian conflict. It is the same question, only that the syngeristic struggle has its presupposition in the new creation of the Augustinian system.

Good nature is, of all moral qualities, the one that the world needs most, and good nature is the result of ease and security, not of a life of arduous struggle. Modern methods of production have given us the possibility of ease and security for all; we have chosen, instead, to have overwork for some and starvation for the others. Hitherto we have continued to be as energetic as we were before there were machines; in this we have been foolish, but there is no reason to go on being foolish for ever.

Well, it was healthy to miss once in a while. It kept self-confidence balanced at a point safely short of arrogance.

The world is not dialectical -- it is sworn to extremes, not to equilibrium, sworn to radical antagonism, not to reconciliation or synthesis. This is also the principle of evil.

For me, reason is the natural organ of truth; but imagination is the organ of meaning. Imagination, producing new metaphors or revivifying old, is not the cause of truth, but its condition.

I am responsible for everything ... except for my very responsibility, for I am not the foundation of my being. Therefore everything takes place as if I were compelled to be responsible. I am abandoned in the world ... in the sense that I find myself suddenly alone and without help, engaged in a world for which I bear the whole responsibility without being able, whatever I do, to tear myself away from this responsibility for an instant.

Let your brother work hard at the French poets. Let him learn them by heart, especially the incomparable Racine; never mind whether he understands him yet or not. I didn't understand him when my mother used to come repeating his verses by my bedside, and lulled me to sleep with her fine voice to the sound of that inimitable music. I knew hundreds of lines long before I knew how to read; and it is thus that my ears, accustomed betimes to this ambrosia, have never since been able to endure any sourer draught.

"You're a bitter man," said Candide. "That's because I've lived," said Martin.

How I wish I didn't know anything about myself and this world!

The nature of power is such that even those who have not sought it, but have had it forced upon them, tend to acquire a taste for more.

The thinking man must ... oppose all cruel customs no matter how deeply rooted in tradition and surrounded by a halo. True manhood is too precious a spiritual good for us to surrender any part of it to thoughtlessness. p. 305; also in The Animal World of Albert Schweitzer (1950), p. 179 Variant : The thinking man must oppose all cruel customs no matter how deeply rooted in tradition and surrounded by a halo. When we have a choice, we must avoid bringing torment and injury into the life of another, even the lowliest creature; to do so is to renounce our manhood and shoulder a guilt which nothing justifies.

To two men living the same number of years, the world always provides the same sum of experiences. It is up to us to be conscious of them.

If I were to give a simple formula or recipe for distinguishing between what I consider to be admissible plans for social reform and inadmissible Utopian blueprints, I might say: Work for the elimination of concrete evils rather than for the realization of abstract goods. Do not aim at establishing happiness by political means. Rather aim at the elimination of concrete miseries.

We all remember how many religious wars were fought for a religion of love and gentleness; how many bodies were burned alive with the genuinely kind intention of saving souls from the eternal fire of hell. Only if we give up our authoritarian attitude in the realm of opinion, only if we establish the attitude of give and take, of readiness to learn from other people, can we hope to control acts of violence inspired by piety and duty.