Our intellectual development in the field of science has outstripped our human development in the field of character.

Charity, by which God and neighbor are loved, is the most perfect friendship.

If you are to be kept right, you must possess either good friends or red-hot enemies. The one will warn you, the other will expose you.

The shortest way to wealth is through the contempt of wealth.

We have not a direct intuition of simultaneity, nor of the equality of two durations. If we think we have this intuition, this is an illusion. We replace it by the aid of certain rules which we apply almost always without taking count of them....We ...choose these rules, not because they are true, but because they are the most convenient, and we may recapitulate them as follows: "The simultaneity of two events, or the order of their succession, the equality of two durations, are to be so defined that the enunciation of the natural laws may be as simple as possible. In other words, all these rules, all these definitions, are only the fruit of an unconscious opportunism."

The second half of a man's life is made up of nothing but the habits he has acquired during the first half.

It has often been said, and certainly not without justification, that the man of science is a poor philosopher. Why then should it not be the right thing for the physicist to let the philosopher do the philosophizing? Such might indeed be the right thing to do at a time when the physicist believes he has at his disposal a rigid system of fundamental laws which are so well established that waves of doubt can't reach them; but it cannot be right at a time when the very foundations of physics itself have become problematic as they are now. At a time like the present, when experience forces us to seek a newer and more solid foundation, the physicist cannot simply surrender to the philosopher the critical contemplation of theoretical foundations; for he himself knows best and feels more surely where the shoe pinches. In looking for an new foundation, he must try to make clear in his own mind just how far the concepts which he uses are justified, and are necessities.

The human understanding is unquiet; it cannot stop or rest, and still presses onward, but in vain. Therefore it is that we cannot conceive of any end or limit to the world, but always as of necessity it occurs to us that there is something beyond... But he is no less an unskilled and shallow philosopher who seeks causes of that which is most general, than he who in things subordinate and subaltern omits to do so.

The best state for human nature is that in which, while no one is poor, no one desires to be richer, nor has any reason to fear being thrust back by the efforts of others to push themselves forward.

It is perhaps not a surprise that photography developed as a technological medium in the industrial age, when reality started to disappear. It is even perhaps the disappearance of reality that triggered this technical form. Reality found a way to mutate into an image.

To require that all of these must be reducible to a single version is to make the mistake of supposing that 'Which are the real objects?' is a question that makes sense independently of our choice of concepts.

Is dogmatic or scholastic theology less doubted in point of fact for claiming, as it does, to be in point of right undoubtable? And if not, what command over truth would this kind of theology really lose if, instead of absolute certainty, she only claimed reasonable probability for her conclusions? If we claim only reasonable probability, it will be as much as men who love the truth can ever at any given moment hope to have within their grasp. Pretty surely it will be more than we could have had, if we were unconscious of our liability to err.

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

Let this always be plain to thee, that this piece of land is like any other; and that all things here are the same with all things on the top of a mountain, or on the sea-shore, or wherever thou chooses to be. For thou wilt find just what Plato says, Dwelling within the walls of the city as in a shepherd's fold on a mountain.

Great men hallow a whole people and lift up all who live in their time.

I was obliged to retract, like a good Catholic, this opinion of mine; and as a punishment my dialogue was prohibited; and after five months being dismissed from Rome (at the time that the city of Florence was infected with plague), the habitation which with generous pity was assigned to me, was that of the dearest friend I had in Siena, Monsignor the Archbishop Piccolomini, whose most agreeable conversation I enjoyed with such quite and satisfaction of mind, that having there resumed my studies, I discovered and demonstrated a great number on the mechanical conclusions on the resistance of solids ... after about five months, the pestilence having ceased, the confinement of that house was changed by His Holiness for the freedom of the country so agreeable to me, whence I returned to the villa of Bellosguardo, and afterwards to Arcetri, where I still breathe salubrious air near my dear native-country Florence.

Gold is now money with reference to all other commodities only because it was previously, with reference to them, a simple commodity.

One of the principal motifs of Nietzsche's work is that Kant had not carried out a true critique because he was not able to pose the problem of critique in terms of values.

What one needs to do at every moment of one's life is to put an end to the old world and to begin a new world.

There is nothing impossible in the existence of the supernatural: its existence seems to me decidedly probable.

No nation which has sunk into this state of dependence can raise itself out of it by the means which have usually been adopted hitherto. Since resistance was useless to it when it was still in possession of all its powers, what can such resistance avail now that it has been deprived of the greater part of them?

Every civilized human being, whatever his conscious development, is still an archaic man at the deeper levels of his psyche. Just as the human body connects us with the mammals and displays numerous relics of earlier evolutionary stages going back to even the reptilian age, so the human psyche is likewise a product of evolution which, when followed up to its origins, show countless archaic traits.

He was free, free in every way, free to behave like a fool or a machine, free to accept, free to refuse, free to equivocate; to marry, to give up the game, to drag this death weight about with him for years to come. He could do what he liked, no one had the right to advise him, there would be for him no Good or Evil unless he thought them into being.

O reader, to what shifts is poor Society reduced, struggling to give still some account of herself, in epochs when Cash Payment has become the sole nexus of man to men!

New technological environments are commonly cast in the molds of the preceding technology out of the sheer unawareness of their designers.

But no mental action seems necessary or invariable in its character. In whatever manner the mind has reacted under a given sensation, in that manner it is the more likely to react again; were this, however, an absolute necessity, habits would become wooden and ineradicable, and no room being left for the formulation of new habits, intellectual life would come to a speedy close. Thus, the uncertainty of the mental law is no mere defect of it, but is on the contrary of its essence. The truth is, the mind is not subject to "law," in the same rigid sense that matter is. It only experiences gentle forces which merely render it more likely to act a given way than it otherwise would be. There always remains a certain amount of arbitrary spontaneity in its action, without which it would be dead.

If God has made us in his image, we have returned him the favor.

I forbid you to be cast down or depressed. It is not enough if you do not shrink from work; ask for it.

Eh bien, continuons... Well, let's get on with it.

There is no duty we so much underrate as the duty of being happy.

Doctors try to get rid of their patients - clergymen try to get them hooked on the medicine so that they will become addicts to the church.

The color is of the object and the object in all its qualities is expressed through color. For it is objects that glows- gems and sunlight; and it is objects that are splendid- crowns, robes, sunlight. Except as they express objects, through being the significant color-quality of materials of ordinary experience, colors effect only transient excitations.

Cato requested old men not to add the disgrace of wickedness to old age, which was accompanied with many other evils.

When you read God's Word, in everything you read, continually to say to yourself: It is I to whom it is speaking - this is earnestness, precisely this is earnestness. Not a single one of those to whom the cause of Christianity in the higher sense has been entrusted forgot to urge this again and again as most crucial, as unconditionally the condition if you are to come to see yourself in the mirror.

Go where he will, the wise man is at home, His hearth the earth, his hall the azure dome.

Look round at the courses of the stars, as if thou wert going along with them; and constantly consider the changes of the elements into one another; for such thoughts purge away the filth of the terrene life.

In the name of national security, the Commission's hearings were held in secret, thereby continuing the policy which has marked the entire course of the case. This prompts my second question: If, as we are told, Oswald was the lone assassin, where is the issue of national security? Indeed, precisely the same question must be put here as was posed in France during the Dreyfus case: If the Government is so certain of its case, why has it conducted all its inquiries in the strictest secrecy? "

Times are bad. Children no longer obey their parents, and everyone is writing a book.

These terrible sociologists, who are the astrologers and alchemists of our twentieth century.

For where God built a church, there the Devil would also build a chapel...Thus is the Devil ever God's ape.

Eros? What other name may we give that impetus which becomes enchanted as soon as it casts its glance on matter and then longs to impress its features upon it? It confronts the body and longs to pass beyond it, to merge with the other erotic cry hidden in that body, to become one till both may vanish and become deathless by begetting sons. It approaches the soul and wishes to merge with it inseparably so that "you" and "I" may no longer exist; it blows on the mass of man - kind and wishes, by smashing the resistances of mind and body, to merge all breaths into one violent gale that may lift the earth! In moments of crisis this Erotic Love swoops down on men and joins them together by force - friends and foes, good and evil. It is a breath superior to all of them, independent of their desires and deeds. It is the spirit, the breathing of God on earth. It descends on men in whatever form it wishes - as dance, as eros, as hunger, as religion, as slaughter. It does not ask our permission.

The people who are regarded as moral luminaries are those who forego ordinary pleasures themselves and find compensation in interfering with the pleasures of others.

Our task is not so much discovery as re-discovery. What one needs is not so much thinking as remembering. Sometimes it suffices to sit quietly and listen well, when venerable men have thought before us. Constant forgettings of truths once perceived are the very charm of the human mind; the history of human thought is nothing more than the story of these forgettings and rememberings and forgettings again.

Bacon, Locke, Descartes, Hume, and all the others knew they were giving rights to vulgarity. But in so doing-in addition to caring for man's well-being-they were providing rights for themselves.

A world without delight and without affection is a world destitute of value.

All of our conscious states, without exception, are caused by lower level neurobiological processes in the brain, and they are realized in the brain as higher level, or system features. It's about as mysterious as the liquidity of water, right? The liquidity is not an extra juice squirted out by the H2O molecules, it's a condition that the system is in; and just as the jar full of water can go from a liquid to solid, depending on the behavior of the molecules, so your brain can go from a state of being conscious to a state of being unconscious, depending on the behavior of the molecules. The famous mind body problem is that simple.

Get thee hence, Satan: for it is written, Thou shalt worship the Lord thy God, and him only shalt thou serve.

When I read the catechism of the Council of Trent, it seems as though I had nothing in common with the religion there set forth.