If I was not a physicist, I would probably be a musician. I often think in music. I live my daydreams in music. I see my life in terms of music. ... I cannot tell if I would have done any creative work of importance in music, but I do know that I get most joy in life out of my violin.

Rejoice not in another man's misfortune!

Ethics occupies a central place in philosophy because it is concerned with sin, with the origin of good and evil and with moral valuations. And since these problems have a universal significance, the sphere of ethics is wider than is generally supposed. It deals with meaning and value and its province is the world in which the distinction between good and evil is drawn, evaluations are made and meaning is sought.

The world is chaos. Nothingness is the yet-to-be-born god of the world.

We do not become righteous by doing righteous deeds but, having been made righteous, we do righteous deeds.

Never acknowledge the limitations of man. Smash all boundaries! Deny whatever your eyes see. Die every moment, but say: "Death does not exist."

Timid men prefer the calm of despotism to the tempestuous sea of liberty.

For it is not the bare Words, but the Scope of the writer that giveth true light, by which any writing is to bee interpreted; and they that insist upon single Texts, without considering the main Designe, can derive no thing from them clearly; but rather by casting atomes of Scripture, as dust before mens eyes, make everything more obscure than it is; an ordinary artifice of those who seek not the truth, but their own advantage.

Wars begin when you will, but they do not end when you please. 

While imprisoned in the shed Pierre had learned not with his intellect but with his whole being, by life itself, that man is created for happiness, that happiness is within him, in the satisfaction of simple human needs, and that all unhappiness arises not from privation but from superfluity. And now during these last three weeks of the march he had learned still another new, consolatory truth- that nothing in this world is terrible. He had learned that as there is no condition in which man can be happy and entirely free, so there is no condition in which he need be unhappy and lack freedom. He learned that suffering and freedom have their limits and that those limits are very near together....

I know that a Christian should be humble, but against the Pope I am going to be proud and say to him: "You, Pope, I will not have you for my boss, for I am sure that my doctrine is divine."

In his arms, my lady lay asleep, wrapped in a veil. He woke her then and trembling and obedient. She ate that burning heart out of his hand; Weeping I saw him then depart from me.

A man who for a long time has gone around hiding a secret becomes mentally deranged. At this point one would imagine that his secret would have to come out, but despite his derangement his soul still sticks to its hideout, and those around him become even more convinced that the false story he told to deceive them is the truth. He is healed of his insanity, knows everything that has gone on, and thereby perceives that nothing has been betrayed. Was this gratifying to him or not; he might wish to have disposed of his secret in his madness; it seems as if there were a fate which forced him to remain in his secret and would not let him go away from it. Or was it for the best, was there a guardian spirit who helped him keep his secret.

I love talking to simple people, with common folk, if you like, and I still do it and still chat now as before with anyone, regardless of intellectual level. On the contrary, I like uneducated people much better and that is obviously my Rumanian heritage.

In the highest civilization, the book is still the highest delight. He who has once known its satisfactions is provided with a resource against calamity.

If exclusive privileges were not granted, and if the financial system would not tend to concentrate wealth, there would be few great fortunes and no quick wealth. When the means of growing rich is divided between a greater number of citizens, wealth will also be more evenly distributed; extreme poverty and extreme wealth would be also rare.

Blessed are the hearts that can bend; they shall never be broken.

Statistics began as the systematic study of quantitative facts about the state.

During the last three centuries, there has been, by virtue of the Inquisition, a greater enjoyment of peace, and happiness, in Spain, than in the other nations of Europe.

All human knowledge begins with intuitions, proceeds from thence to concepts, and ends with ideas.

Understand me well. My appeal is to observation - observation that each of you must make for himself.

It has become almost a cliché to remark that nobody boasts of ignorance of literature, but it is socially acceptable to boast ignorance of science and proudly claim incompetence in mathematics.

Never has there been one possessed of complete sincerity who did not move others. Never has there been one who had not sincerity who was able to move others.

The President ... may err ... Congress may decide amiss ... But if the Supreme Court is ever composed of imprudent or bad men, the Union may be plunged into anarchy or civil war.

When I endeavour to examine my own conduct, when I endeavour to pass sentence upon it, and either to approve or condemn it, it is evident that, in all such cases, I divide myself, as it were, into two persons; and that I, the examiner and judge, represent a different character from that other I, the person whose conduct is examined into and judged of.

Again, we should notice the force, effect, and consequences of inventions, which are nowhere more conspicuous than in those three which were unknown to the ancients; namely, printing, gunpowder, and the compass. For these three have changed the appearance and state of the whole world; first in literature, then in warfare, and lastly in navigation: and innumerable changes have been thence derived, so that no empire, sect, or star, appears to have exercised a greater power and influence on human affairs than these mechanical discoveries.

Make your educational laws strict and your criminal ones can be gentle; but if you leave youth its liberty you will have to dig dungeons for ages.

They all attributed the peaceful dominion of religion in their country mainly to the separation of church and state. I do not hesitate to affirm that during my stay in America I did not meet a single individual, of the clergy or the laity, who was not of the same opinion on this point.

There is but one law for all, namely, that law which governs all law, the law of our Creator, the law of humanity, justice, equity - the law of nature, and of nations.

We attest that He is the Willer of all things that are, the ruler of all originated phenomena; there does not come into the visible or invisible world anything meager or plenteous, small or great, good or evil, or any advantage or disadvantage, belief or unbelief, knowledge or ignorance, success or failure, increase or decrease, obedience or disobedience, except by His will. What He wills is, and what He does not, will not; there is not a glance of the eye, nor a stray thought of the heart that is not subject to His will. He is the Creator, the Restorer, the Doer of whatsoever He wills. There is none that rescinds His command, none that supplements His decrees, none that dissuades a servant from disobeying Him, except by His help and mercy, and none has power to obey Him except by His will.

What is prudence in the conduct of every private family, can scarce be folly in that of a great kingdom.

Greatness by nature includes a power, but not a will to power.

They are irreverent to the gods and disobedient to our edicts, lenient as they are. For we allow none of them to be dragged to the altars unwillingly...It is therefore my pleasure to announce and publish to all the people by this edict, that they must not abet the seditions of the clergy...They may hold their meetings, if they wish, and offer prayers according to their established use...and for the future, let all people live in harmony...Men should be taught and won over by reason, not by blows, insults, and corporal punishments. I therefore most earnestly admonish the adherents of the true religion not to injure or insult the Galilaeans in any way...Those who are in the wrong in matters of supreme importance are objects of pity rather than of hate...

Man's greatest concern is to know how he shall properly fill his place in the universe and correctly understand what he must be in order to be a man.

Means at our disposal should be regarded as a bulwark against the many evils and misfortunes that can occur. We should not regard such wealth as a permission or even an obligation to procure for ourselves the pleasures of the world.

When we consider that labor is the producer of all wealth, is it not evident that the impoverishment and, dependence of labor are abnormal conditions resulting from restrictions and usurpations, and that instead of accepting protection, what labor should demand is freedom. That those who advocate any extension of freedom choose to go no further than suits their own special purpose is no reason why freedom itself should be distrusted.

The retinue of a grandee in China or Indostan accordingly is, by all accounts, much more numerous and splendid than that of the richest subjects of Europe.

Association, applied to land, shares the economic advantage of large-scale landed property, and first brings to realization the original tendency inherent in land-division, namely, equality. In the same way association also re-establishes, now on a rational basis, no longer mediated by serfdom, overlordship and the silly mysticism of property, the intimate ties of man with the earth, since the earth ceases to be an object of huckstering, and through free labour and free enjoyment becomes once more a true personal property of man.

It is fashionable to wax apocalyptic about the threat to humanity posed by the AIDS virus, "mad cow" disease, and many others, but I think a case can be made that faith is one of the world's great evils, comparable to the smallpox virus but harder to eradicate.

The application of algebra to geometry... far more than any of his metaphysical speculations, has immortalized the name of Descartes, and constitutes the greatest single step ever made in the progress of the exact sciences.

Stir up thy mind, and recall thy wits again from thy natural dreams, and visions, and when thou art perfectly awoken, and canst perceive that they were but dreams that troubled thee, as one newly awakened out of another kind of sleep look upon these worldly things with the same mind as thou didst upon those, that thou sawest in thy sleep.

My immediate consciousness, my absolute perception, cannot go beyond myself, - I have immediate knowledge only of myself, whatever I know further I know only by reasoning, in the same manner in which I have come to those conclusions concerning the original powers of Nature, which certainly do not lie within the circle of my perceptions. I, however, - that which I call myself, - am not the man-forming power of Nature, but only one of its manifestations ; and only of this manifestation am I conscious, not of that power, whose existence I have only discovered from the necessity of explaining my own.

That all men are equal is a proposition which at ordinary times no sane individual has ever given his assent.