Conduct, practice, is the proof of doctrine, theory. "If any man will do His will - the will of Him that sent me," said Jesus, "he shall know of the doctrine, whether it be of God or whether I speak of myself" (John vii. 17); and there is a well known saying of Pascal: "Begin by taking holy water and you will end by becoming a believer." And pursuing a similar train of thought, Johann Jakob Moser, the pietist, was of the opinion that no atheist or naturalist had the right to regard the Christian religion as void of truth so long as he had not put it to the proof by keeping its precepts and commandments.

Our own experience provides the basic material for our imagination, whose range is therefore limited. It will not help to try to imagine that one has webbing on one's arms, which enables one to fly around at dusk and dawn catching insects in one's mouth; that one has very poor vision, and perceives the surrounding world by a system of reflected high-frequency sound signals; and that one spends the day hanging upside down by one's feet in an attic. Insofar as I can imagine this (which is not very far), it tells me only what it would be like for me to behave as a bat behaves. But that is not the question. I want to know what it is like for a bat to be a bat. Yet if I try to imagine this, I am restricted to the resources of my own mind, and those resources are inadequate to the task.

The punctuation of anniversaries is terrible, like the closing of doors, one after another between you and what you want to hold on to.

To fear is to die every minute.

Do not take part in the council, unless you are called.

Wisdom thoroughly learned, will never be forgotten. Science is got by diligence; but Discretion and Wisdom cometh of GOD.

I respect orders but I respect myself too and I do not obey foolish rules made especially to humiliate me.

Beating is the worst, and therefore the last means to be us'd in the correction of children, and that only in the cases of extremity, after all gently ways have been try'd, and proved unsuccessful; which, if well observ'd, there will very seldom be any need of blows.

A man builds a fine house; and now he has a master, and a task for life: he is to furnish, watch, show it, and keep it in repair, the rest of his days.

I am aware that the great Plato himself, and after him, a man posterior to him in date, though not in mind, I mean Iamblichus of Chalcis (who initiated us into other branches of philosophy, and also into this by means of his discourses), did both of them as far as hypothesis goes, take for granted the fact of a Creation and assumed the universe to have been, in a certain sense, the Work of Time, in order that the most important of the effects produced by this Power, may be reduced into a shape for examination.

As long as you live, keep learning how to live.

Alexander, king of Macedon, began to study geometry; unhappy man, because he would thereby learn how puny was that earth of which he had seized but a fraction! Unhappy man, I repeat, because he was bound to understand that he was bearing a false title. For who can be "great" in that which is puny?

The aim of jazz is the mechanical reproduction of a regressive moment, a castration symbolism. 'Give up your masculinity, let yourself be castrated,' the eunuchlike sound of the jazz band both mocks and proclaims, 'and you will be rewarded, accepted into a fraternity which shares the mystery of impotence with you, a mystery revealed at the moment of the initiation rite.

It is hardly in human nature that a man should quite accurately gauge the limits of his own insight; but it is the duty of those who profit by his work to consider carefully where he may have been carried beyond it. If we must needs embalm his possible errors along with his solid achievements, and use his authority as an excuse for believing what he cannot have known, we make of his goodness an occasion to sin.

This perversion of the ethical values soon crystallized into the all-dominating slogan of the Communist Party: THE END JUSTIFIES ALL MEANS. Similarly in the past the Inquisition and the Jesuits adopted this motto and subordinated to it all morality. It avenged itself upon the Jesuits as it did upon the Russian Revolution. In the wake of this slogan followed lying, deceit, hypocrisy and treachery, murder, open and secret. It should be of utmost interest to students of social psychology that two movements as widely separated in time and ideas as Jesuitism and Bolshevism reached exactly similar results in the evolution of the principle that the end justifies all means. The historic parallel, almost entirely ignored so far, contains a most important lesson for all coming revolutions and for the whole future of mankind.

Three o'clock is always too late or too early for anything you want to do.

Concerning the female sorcerer. Roman law also prescribes this. Why does the law name women more than men here, even though men are also guilty of this? Because women are more susceptible to those superstitions of Satan; take Eve, for example. They are commonly called "wise women." Let them be killed.

The wisest among us is very lucky never to have met the woman, be she beautiful or ugly, intelligent or stupid, who could drive him crazy enough to be fit to be put into an asylum.

There as here, passions are the motive of all action, but they are livelier, more ardent, or merely simpler and purer, thereby assuming a totally different character. All the first movements of nature are good and right.

It has often been said that every man who has suffered misfortunes prefers to be himself, even with his misfortunes, rather than to be someone else without them. For unfortunate men, when they preserve their normality in their misfortune - that is to say, when they endeavor to persist in their own being - prefer misfortune to non-existence. For myself I can say that when a as a youth, and even as a child, I remained unmoved when shown the most moving pictures of hell, for even then nothing appeared to me quite so horrible as nothingness itself. It was a furious hunger of being that possessed me, an appetite for divinity, as one of our ascetics [San Juan de los Angeles] has put it.

It is easy to follow in the sacred writings of the Jewish people the development of the religion of fear into the moral religion, which is carried further in the New Testament. The religions of all civilized peoples, especially those of the Orient, are principally moral religions. An important advance in the life of a people is the transformation of the religion of fear into the moral religion. But one must avoid the prejudice that regards the religions of primitive peoples as pure fear religions and those of the civilized races as pure moral religions. All are mixed forms, though the moral element predominates in the higher levels of social life.

People do not go into the company of their fellow-creatures for what would seem a very sufficient reason, namely, that they have something to say to them, or something that they want to hear from them; but in the vague hope that they may find something to say.

Traditional philosophy's claim to totality, culminating in the thesis that the real is rational, is indistinguishable from apologetics.

It was the period of my mental progress which I have now reached that I formed the friendship which has been the honour and chief blessing of my existence, as well as the source of a great part of all that I have attempted to do, or hope to effect hereafter, for human improvement. My first introduction to the lady who, after a friendship of twenty years, consented to become my wife, was in 1830, when I was in my twenty-fifth and she in her twenty-third year.

Government spending cannot create additional jobs. If the government provides the funds required by taxing the citizens or by borrowing from the public, it abolishes on the one hand as many jobs as it creates on the other. If government spending is financed by borrowing from the commercial banks, it means credit expansion and inflation. If in the course of such an inflation the rise in commodity prices exceeds the rise in nominal wage rates, unemployment will drop. But what makes unemployment shrink is precisely the fact that real wage rates are falling.

People nowadays think that scientists exist to instruct them, poets, musicians, etc. to give them pleasure. The idea that these have something to teach them - that does not occur to them.

He will through life be master of himself and a happy man who from day to day can have said, "I have lived: tomorrow the Father may fill the sky with black clouds or with cloudless sunshine."

Those who have a spark of self-respect left, prefer open defiance, prefer crime to the emaciated, degraded position of poverty.

No nobler feeling than this of admiration for one higher than himself dwells in the breast of man. It is to this hour, and at all hours, the vivifying influence in man's life.

If He who in Himself can lack nothing chooses to need us, it is because we need to be needed.

No man can visualize four dimensions, except mathematically ... I think in four dimensions, but only abstractly. The human mind can picture these dimensions no more than it can envisage electricity. Nevertheless, they are no less real than electro-magnetism, the force which controls our universe, within, and by which we have our being.

In the beginning there were two primal spirits,Twins spontaneously active,These are the Good and the Evil, in thought, and in word, and in deed.

Malthus's population principle was quite as much a banner, and a point of union among us, as any opinion specially belonging to Bentham. This great doctrine, originally brought forward as an argument against the indefinite improvability of human affairs, we took up with ardent zeal in the contrary sense, as indicating the sole means of realizing that improvability by securing full employment at high wages to the whole labouring population through a voluntary restriction of the increase of their numbers.

Several particular maxims... are as powerful, although false, in carrying away belief, as those the most true.

When one admits that nothing is certain one must, I think, also admit that some things are much more nearly certain than others. It is much more nearly certain that we are assembled here tonight than it is that this or that political party is in the right. Certainly there are degrees of certainty, and one should be very careful to emphasize that fact, because otherwise one is landed in an utter skepticism, and complete skepticism would, of course, be totally barren and completely useless.

He marveled at the strange blindness by which men, though they are so alert to what changes in themselves, impose on their friends an image chosen for them once and for all. He was being judged by what he had been. Just as dogs don't change character, men are dogs to one another.

The subject of a gestalt demonstration knows that his perception has shifted because he can make it shift back and forth repeatedly while he holds the same book or piece of paper in his hands. Aware that nothing in his environment has changed, he directs his attention increasingly not to the figure (duck or rabbit) but to the lines of the paper he is looking at. Ultimately he may even learn to see those lines without seeing either of the figures, and he may then say (what he could not legitimately have said earlier) that it is these lines that he really sees but that he sees them alternately as a duck and as a rabbit. ...As in all similar psychological experiments, the effectiveness of the demonstration depends upon its being analyzable in this way. Unless there were an external standard with respect to which a switch of vision could be demonstrated, no conclusion about alternate perceptual possibilities could be drawn. 

Reason is not measured by size or height, but by principle.

Space and time are commonly regarded as the forms of existence of the real world, matter as its substance. A definite portion of matter occupies a definite part of space at a definite moment of time. It is in the composite idea of motion that these three fundamental conceptions enter into intimate relationship.

If the task of philosophy is to break the domination of words over the human mind, then my concept notation, being developed for these purposes, can be a useful instrument for philosophers. I believe the cause of logic has been advanced already by the invention of this concept notation.

I'm delighted to hear someone make the claim that there is moral progress because it can be such a incendiary thing to say, and its something that I say and deeply believe in.

Verily I say unto you, All sins shall be forgiven unto the sons of men, and blasphemies wherewith soever they shall blaspheme: But he that shall blaspheme against the Holy Ghost hath never forgiveness, but is in danger of eternal damnation.

Then we may begin by assuming that there are three classes of men—lovers of wisdom, lovers of honor, lovers of gain?

We should always speak what would please the man of whom we expect a favour, like the hunter who sings sweetly when he desires to shoot a deer.

There must be a seed of every good thing in the character of men, otherwise no one can bring it out. Lacking that, analogous motives, honor, etc., are substituted. Parents are in the habit of looking out for the inclinations, for the talents and dexterity, perhaps for the disposition of their children, and not at all for their heart or character.

Reason as an organ for perceiving the true nature of reality and determining the guiding principles of our lives has come to be regarded as obsolete.

In particular, it is certainly wrong to condemn poor old Homo sapiens as the only species to kill his own kind, the only inheritor of the mark of Cain, and similar melodramatic charges. Whether a naturalist stresses the violence or the restraint of animal aggression depends partly on the kinds of animals he is used to watching, and partly on his evolutionary preconceptions-Lorenz is, after all, a 'good of the species' man. Even if it has been exaggerated, the gloved fist view of animal fights seems to have at least some truth. Superficially this looks like a form of altruism. The selfish gene theory must face up to the difficult task of explaining it. Why is it that animals do not go all out to kill rival members of their species at every possible opportunity?