I am endeavouring in a general way to explain the laws of double refraction on this hypothesis, but have not yet arrived at any results sufficiently decisive to be communicated.

The fundamental maxim of those who stand at the head of this Age, and therefore the principle of the Age, is this,-to accept nothing as really existing or obligatory, but that which they can understand and clearly comprehend. With regard to this fundamental principle, as we have now declared and adopted it without farther definition or limitation, this third Age is precisely similar to that which is to follow it, the fourth, or age of Reason as Science,-and by virtue of this similarity prepares the way for it. Before the tribunal of Science, too, nothing is accepted but the Conceivable. Only in the application of the principle there is this difference between the two Ages,-that the third, which we shall shortly name that of Empty Freedom, makes its fixed and previously acquired conceptions the measure of existence; while the fourth-that of Science-on the contrary, makes existence the measure, not of its acquired, but of its desiderated beliefs.

This I know, that between finite and infinite there is no comparison; so that the difference between God and the greatest and most excellent created thing is no less than the difference between God and the least created thing.

Now the real fruits of human nature - the arts, sciences, great enterprises, lofty conceptions, manly virtues - are due especially to the state of war. In a word, we can say that blood is the manure of the plant we call genius.

The friendship of one wise man is better than the friendship of a host of fools.

Believing that the happiness of mankind is best promoted by the useful pursuits of peace, that on these alone a stable prosperity can be founded, that the evils of war are great in their endurance, and have a long reckoning for ages to come, I have used my best endeavors to keep our country uncommitted in the troubles which afflict Europe, and which assail us on every side. Letter to the Young Republicans of Pittsburg and its vicinities

The abolition of private property is, doubtless, the shortest and most significant way to characterize the revolution in the whole social order which has been made necessary by the development of industry - and for this reason it is rightly advanced by communists as their main demand.

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.

For the world to become philosophic amounts to philosophy's becoming world-order reality; and it means that philosophy, at the same time that it is realized, disappears.

If you have a faith, it is statistically overwhelmingly likely that it is the same faith as your parents and grandparents had. No doubt soaring cathedrals, stirring music, moving stories and parables, help a bit. But by far the most important variable determining your religion is the accident of birth. The convictions that you so passionately believe would have been a completely different, and largely contradictory, set of convictions, if only you had happened to be born in a different place. Epidemiology, not evidence.

Men do not lead the revolution; it is the Revolution that uses men. They are right when they say it goes all alone. This phrase means that never has the Divinity shown itself so clearly in any human event. If the vilest instruments are employed, punishment is for the sake of regeneration.

Ever since the war began, I have felt that I could no longer go on being a pacifist, but I have hesitated to say so, because of the responsibility involved. If I were young enough to fight myself, I should do so, but it is more difficult to urge others. Now, however, I feel that I ought to announce that I have changed my mind.

The man of virtue makes the difficulty to be overcome his first business, and success only a subsequent consideration.

Friends are not primarily absorbed in each other. It is when we are doing things together that friendship springs up - painting, sailing ships, praying, philosophizing, fighting shoulder to shoulder. Friends look in the same direction. Lovers look at each other - that is, in opposite directions. To transfer bodily all that belongs to one relationship into the other is blundering.

And so the arbitrary union of three incommensurate, mutually disconnected concepts became the basis of a bewildering theory... [by which] one of the lowest renderings of art, art for mere pleasure - against which all of the master teachers warned - was idealized as the ultimate in art.

Its first ethical precept is the identity of means used and aims sought. The ultimate end of all revolutionary social change is to establish the sanctity of human life, the dignity of man, the right of every human being to liberty and wellbeing. Unless this be the essential aim of revolution, violent social changes would have no justification. For external social alterations can be, and have been, accomplished by the normal processes of evolution. Revolution, on the contrary, signifies not mere external change, but internal, basic, fundamental change. That internal change of concepts and ideas, permeating ever-larger social strata, finally culminates in the violent upheaval known as revolution.

Noise is the most impertinent of all forms of interruption. It is not only an interruption, but also a disruption of thought.

More and more it is becoming evident that what the West can most readily give to the East is its science and its scientific outlook. This is transferable from country to country, and from race to race, wherever there is a rational society.

To believe in God is to long for His existence and, further, it is to act as if he existed; it is to live by this longing and to make it the inner spring of our action. This longing or hunger for divinity begets hope, hope begets faith, and faith and hope beget charity. Of this divine longing is born our sense of beauty, of finality, of goodness.

Any reductionist program has to be based on an analysis of what is to be reduced. If the analysis leaves something out, the problem will be falsely posed.

We are inclined to overemphasize the material influences in history. The Russians especially make this mistake. Intellectual values and ethnic influences, tradition and emotional factors are equally important. If this were not the case, Europe would today be a federated state, not a madhouse of nationalism.

In the middle ages of Christianity opposition to the State opinions was hushed. The consequence was, Christianity became loaded with all the Romish follies. Nothing but free argument, raillery & even ridicule will preserve the purity of religion.

Those that will combat use and custom by the strict rules of grammar do but jest.

A new theory by the author has been added, which draws the physical inferences consequent on the extension of the foundations of geometry beyond Reimann... and represents an attempt to derive from world-geometry not only gravitational but also electromagnetic phenomena. Even if this theory is still only in its infant stage, I feel convinced that it contains no less truth than Einstein's Theory of Gravitation-whether this amount of truth is unlimited or, what is more probable, is bounded by the Quantum Theory.

Judges of elegance and taste consider themselves as benefactors to the human race, whilst they are really only the interrupters of their pleasure ... There is no taste which deserves the epithet good, unless it be the taste for such employments which, to the pleasure actually produced by them, conjoin some contingent or future utility: there is no taste which deserves to be characterized as bad, unless it be a taste for some occupation which has mischievous tendency.

It is said that truth comes from the mouths of fools and children: I wish every good mind which feels an inclination for satire would reflect that the finest satirist always has something of both in him.

All the seemingly positive valuations and judgments of ressentiment are hidden devaluations and negations.

In France at least, the history of science and thought gives pride of place sciences, sciences of the necessary, all close to philosophy: one can observe in their history the almost uninterrupted emergence of truth and pure reason. The other disciplines, however - those, for example, that concern living beings, languages, or economic facts - are considered too tinged with empirical thought, too exposed to the vagaries of chance or imagery to age old traditions and external events, for it to be supposed that their history could be anything other irregular. At most, they are expected to provide evidence of a state of mind, an intellectual fashion, a mixture of archaism and bold conjecture, of intuition and blindness. But what if empirical knowledge, at a given time and in a given culture, did possess a well defined regularity.

The essence of the good is a certain kind of moral purpose, and that of the evil is a certain kind of moral purpose.

Our tools are extensions of our purposes, and so we find it natural to make metaphorical attributions of intentionality to them; but I take it no philosophical ice is cut by such examples.

The meeting of two personalities is like the contact of two chemical substances: if there is any reaction, both are transformed.

If we endeavor to form our conceptions upon history and life, we remark three classes of men. The first consists of those for whom the chief thing is the qualities of feelings. These men create art. The second consists of the practical men, who carry on the business of the world. They respect nothing but power, and respect power only so far as it [is] exercized. The third class consists of men to whom nothing seems great but reason. If force interests them, it is not in its exertion, but in that it has a reason and a law. For men of the first class, nature is a picture; for men of the second class, it is an opportunity; for men of the third class, it is a cosmos, so admirable, that to penetrate to its ways seems to them the only thing that makes life worth living.

Emptiness simply prevents what is individual from insisting on itself.

It is now almost my sole rule of life to clear myself of cants and formulas, as of poisonous Nessus shirts.

What would you say of that man who was made king by the error of the people, if he had so far forgotten his natural condition as to imagine that this kingdom was due to him, that he deserved it, and that it belonged to him of right? You would marvel at his stupidity and folly. But is there less in the people of rank who live in so strange a forgetfulness of their natural condition?

Let the eye of vigilance never be closed.

Thus, all unknown quantities can be expressed in terms of a single quantity, whenever the problem can be constructed by means of circles and straight lines, or by conic sections, or even by some other curve of degree not greater than the third or fourth.But I shall not stop to explain this in more detail, because I should deprive you of the pleasure of mastering it yourself, as well as of the advantage of training your mind by working over it, which is in my opinion the principal benefit to be derived from this science. Because, I find nothing here so difficult that it cannot be worked out by anyone at all familiar with ordinary geometry and with algebra, who will consider carefully all that is set forth in this treatise.

Where cruelty and injustice are concerned, hopelessness is submission, which I believe is immoral.

Because we cannot discover God's throne in the sky with a radiotelescope or establish (for certain) that a beloved father or mother is still about in a more or less corporeal form, people assume that such ideas are "not true." I would rather say that they are not "true" enough, for these are conceptions of a kind that have accompanied human life from prehistoric times, and that still break through into consciousness at any provocation.

Religious minds, which are distrustful of philosophic dogmas, fall into the error - inculcated by philosophy - of supposing that Providence is limited in its action; that is does not extend to the social world or the social relations of mankind, and that God has not determined upon any plan of social organization for the regulation of those relations. If they had a PROFOUND FAITH IN THE UNIVERSALITY OF PROVIDENCE, they would be convinced that all human needs must have been foreseen and provided for, and especially that the most urgent of them all could not have been overlooked - namely, the need of a social order for the regulation of our industrial and social relations.

Reason can make little headway on its own and struggles to be heard; often it has to be - so to speak - armed by the fearsome epigram. French wit pricks like a needle, so that the thread goes through the hole.

Man is the only creature who refuses to be what he is.

Instead of gambling on the eternal impossibility of the revolution and on the fascist return of a war-machine in general, why not think that a new type of revolution is in the course of becoming possible, and that all kinds of mutating, living machines conduct wars, are combined and trace out a plane of consistence which undermines the plane of organization of the World and the States?

We set the treatment of bodies so high above the treatment of souls, that the physician occupies a higher place in society than the school-master. The governess is to have every one of God's gifts; she is to do that which the mother herself is incapable of doing; but our son must not degrade himself by marrying the governess, nor our daughter the tutor, though she might marry the medical man.

War involves in its progress such a train of unforeseen and unsupposed circumstances ... that no human wisdom can calculate the end. Prospects on the Rubicon

I gave up caring about anything, and all the problems disappeared. And it was after that that I found out the truth. I learnt the truth last November - on the third of November, to be precise - and I remember every instant since.