In the course of my fight with the school, I couldn't help but notice that I became a pariah. [...] Once, however, a fellow faculty member, making sure we were unobserved, said to me, "Isaac, the faculty is proud of you for your courage in fighting the administration for academic freedom."I said, "There's no courage involved in it. Don't you know my definition of academic freedom?""No. What's your definition of academic freedom?"I said, "Independent income."

With our present industrial technique we can, if we choose, provide a tolerable subsistence for everybody. We could also secure that the world's population should be stationary if we were not prevented by the political influence of churches which prefer war, pestilence, and famine to contraception. The knowledge exists by which universal happiness can be secured; the chief obstacle to its utilization for that purpose is the teaching of religion. Religion prevents our children from having a rational education; religion prevents us from removing fundamental causes of war; religion prevents us from teaching the ethic of scientific co-operation in place of the old fierce doctrines of sin and punishment. It is possible that mankind is on the threshold of a golden age; but, if so, it will be necessary first to slay the dragon that guards the door, and this dragon is religion.

Have patience awhile; slanders are not long-lived. Truth is the child of time; erelong she shall appear to vindicate thee.

The real and effectual discipline which is exercised over a workman is that of his customers. It is the fear of losing their employment which restrains his frauds and corrects his negligence.

Many receive advice, few profit by it.

For eighteen hundred years, though perchance I have no right to say it, the New Testament has been written; yet where is the legislator who has wisdom and practical talent enough to avail himself of the light which it sheds on the science of legislation?

I believe in Christianity as I believe that the sun has risen. Not only because I see it, but because by it I see everything else.

The spiritual men of India, a great and watchful multitude whose spiritual status is unattainable, are many of them catholics in a deeper sense than we of the West have yet given to the word ....

The notion of nothingness is not characteristic of laboring humanity: those who toil have neither time nor inclination to weigh their dust; they resign themselves to the difficulties or the doltishness of fate; they hope: hope is a slave's virtue.

One who seeks will find, and for one who knocks it will be opened.

He was seized and dragged off to King Philip, and being asked who he was, replied, "A spy upon your insatiable greed."

Either every imaginable institution is founded on a religious concept or it is only a passing phenomenon. Institutions are strong and durable to the degree that they are, so to speak, deified. Not only is human reason, or what is ignorantly called philosophy, incapable of supplying these foundations, which with equal ignorance are called superstitious, but philosophy is, on the contrary, an essentially disruptive force.

And if you lend to those from whom you expect repayment, what credit is that to you? Even sinners lend to sinners, expecting to be repaid in full. But love your enemies, do good to them, and lend to them without expecting to get anything back.

The souls of emperors and cobblers are cast in the same mold...The same reason that makes us wrangle with a neighbor creates a war betwixt princes.

You, Socrates, began by saying that virtue can't be taught, and now you are insisting on the opposite, trying to show that all things are knowledge, justice, soundness of mind, even courage, from which it would follow that virtue most certainly can be taught.

When you move into a new area, a new territory and learn a new language, the language is not a new subject, it is an environment, it is total.

A circuit performed by a capital and meant to be a periodical process, not an individual act, is called its turnover. The duration of this turnover is determined by the sum of its time of production and its time of circulation.

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.

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

If it is not right, do not do it, if it is not true, do not say it. For let thy efforts be -

As for large landed property, its defenders have always, sophistically, identified the economic advantages offered by large-scale agriculture with large-scale landed property, as if it were not precisely as a result of the abolition of property that this advantage, for one thing, would receive its greatest possible extension, and, for another, only then would be of social benefit.

The task of a theory of class is to identify the existing conditions for potential collective struggle and express them as a political proposition.

In attempting to expose the views of another, one is forced to make one's own view appear infallible and absolute, which is a procedure altogether to be avoided if one is making a specifically non-evaluative investigation. The second possible approach is nevertheless to combine such a non-evaluative analysis with a definite epistemology. Viewed from the angle of this second approach there are two separate and distinct solutions to the problem of what constitutes reliable knowledge - the one solution may be termed relationism, and the other relativism.

There is no means of avoiding the final collapse of a boom brought about by credit expansion. The alternative is only whether the crisis should come sooner as the result of voluntary abandonment of further credit expansion, or later as a final and total catastrophe of the currency system involved.

That science is incapable of solving in its own way those fundamental questions is no sufficient reason for slighting them.

One of the problems... both on the left and the right is that the... individual autonomy protected by liberalism tends to take more and more extreme versions... and... becomes self-undermining.

Heresy is a set of opinions "at variance with established or generally received principles." In this sense, heresy is the price of all originality and innovation.

No concrete test of what is really true has ever been agreed upon.

To become sober is: to come to oneself in self-knowledge and before God as nothing before him, yet infinitely, unconditionally engaged.

As for my own business, even that kind of surveying which I could do with most satisfaction my employers do not want. They would prefer that I should do my work coarsely and not too well, ay, not well enough. When I observe that there are different ways of surveying, my employer commonly asks which will give him the most land, not which is most correct.

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.

Politics and the pulpit are terms that have little agreement.

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. 

The best thing about the sciences is their philosophical ingredient, like life for an organic body. If one dephilosophizes the sciences, what remains left? Earth, air, and water.

If the material world rests upon a similar ideal world, this ideal world must rest upon some other; and so on, without end. It were better, therefore, never to look beyond the present material world. By supposing it to contain the principle of its order within itself, we really assert it to be God; and the sooner we arrive at that Divine Being, so much the better. When you go one step beyond the mundane system, you only excite an inquisitive humour which it is impossible ever to satisfy.

Neither of us cares a straw for popularity. A proof of this is for example, that, because of aversion to any personality cult, I have never permitted the numerous expressions of appreciation from various countries with which I was pestered during the existence of the International to reach the realm of publicity, and have never answered them, except occasionally by a rebuke. When Engels and I first joined the secret Communist Society we made it a condition that everything tending to encourage superstitious belief in authority was to be removed from the statutes.

Man reaches the highest point of his knowledge about God when he knows that he knows him not, inasmuch as he knows that that which is God transcends whatsoever he conceives of him.

The first premise of all human history is, of course, the existence of living human individuals. Thus the first fact to be established is the physical organisation of these individuals and their consequent relation to the rest of nature.

A man full of warm, speculative benevolence may wish his society otherwise constituted than he finds it, but a good patriot and a true politician always considers how he shall make the most of the existing materials of his country. A disposition to preserve and an ability to improve, taken together, would be my standard of a statesman. Everything else is vulgar in the conception, perilous in the execution.

Brief and powerless is Man's life; on him and all his race the slow, sure doom falls pitiless and dark.

The inversion of external compulsion into the compulsion of conscience ... produces the machine-like assiduity and pliable allegiance required by the new rationality.