Is it always permissible to speak of the extension of a concept, of a class? And if not, how do we recognize the exceptional cases? Can we always infer from the extension of one concept's coinciding with that of a second, that every object which falls under the first concept also falls under the second?

How many mistakes power has committed! And how often has it ignored the means to conserve itself! Man is insatiable for power; he is infinite in his desires, and, always discontented with what he has, he loves only what he has not. People complain about the despotism of princes; they should complain about that of man. We are all born despots, from the most absolute monarch of Asia to the child who smothers a bird with his hand for the pleasure of seeing something in the world weaker than himself. There is no man who does not abuse power, and experience proves that the most abominable despots, if they come to seize the sceptre, will be precisely those who rant against despotism.

Pragmatism, on the other hand, asks its usual question. "Grant an idea or belief to be true," it says, "what concrete difference will its being true make in anyone's actual life? How will the truth be realized? What experiences will be different from those which would obtain if the belief were false? What, in short, is the truth's cash-value in experiential terms?"

To sum up the whole, we should say that the aim of the Platonic philosophy was to exalt man into a god. The aim of the Baconian philosophy was to provide man with what he requires while he continues to be man. The aim of the Platonic philosophy was to raise us far above vulgar wants. The aim of the Baconian philosophy was to supply our vulgar wants. The former aim was noble; but the latter was attainable.

Religions are not true or false, but better or worse.

Men exist for the sake of one another. Teach them then or bear with them.

A man might say, "The things that are in the world are what God has made. ... Why should I not love what God has made?" ...Suppose, my brethren, a man should make for his betrothed a ring, and she should prefer the ring given her to the betrothed who made it for her, would not her heart be convicted of infidelity? ... God has given you all these things: therefore, love him who made them.

To confuse our own constructions and inventions with eternal laws or divine decrees is one of the most fatal delusions of men. 

Mathematics have a triple aim. They must furnish an instrument for the study of nature. But that is not all: they have a philosophic aim and, I dare maintain, an esthetic aim. They must aid the philosopher to fathom the notions of number, of space, of time. And above all, their adepts find therein delights analogous to those given by painting and music. They admire the delicate harmony of numbers and forms; they marvel when a new discovery opens to them an unexpected perspective; and has not the joy they thus feel the esthetic character, even though the senses take no part therein? Only a privileged few are called to enjoy it fully, it is true, but is not this the case for all the noblest arts?This is why I do not hesitate to say that mathematics deserve to be cultivated for their own sake, and the theories inapplicable to physics as well as the others. Even if the physical aim and the esthetic aim were not united, we ought not to sacrifice either.

An utterance can have Intentionality, just as a belief has Intentionality, but whereas the Intentionality of the belief is intrinsic the Intentionality of the utterance is derived.

Although the formulations of science now offer the most advanced knowledge of nature, men continue to use obsolete forms of thought long discarded by scientific theory. In so far as these obsolete forms are superfluous for science, the fact that they persist violated the principle of the economy of thought, that characteristic trait of the bourgeois temper.

No one talks more passionately about his rights than he who in the depths of his soul doubts whether he has any. By enlisting passion on his side he wants to stifle his reason and its doubts: thus he will acquire a good conscience and with it success among his fellow men.

Everywhere in life, the true question is not what we gain, but what we do.

Medicine considers the human body as to the means by which it is cured and by which it is driven away from health.

It is the worst of all quaint and of all cheap ways of life that they bring us at last to the pinch of some humiliation.

These men traveling down to the City in the morning, reading their newspapers or staring at advertisements above the opposite seats, they have no doubt of who they are. Inscribe on the placard in place of the advertisement for corn-plasters, Elliot's lines: We are the hollow men

What do I care about Jupiter? Justice is a human issue, and I do not need a god to teach it to me.

When we run over libraries, persuaded of these principles, what havoc must we make? If we take in our hand any volume; of divinity or school metaphysics, for instance; let us ask, Does it contain any abstract reasoning concerning quantity or number? No. Does it contain any experimental reasoning concerning matter of fact and existence? No. Commit it then to the flames: For it can contain nothing but sophistry and illusion.

How often misused words generate misleading thoughts!

I take toleration to be a part of religion. I do not know which I would sacrifice; I would keep them both: it is not necessary that I should sacrifice either.

On the stage on which we are observing it, - Universal History - Spirit displays itself in its most concrete reality.

Art is a human activity consisting in this, that one consciously, by means of certain external symbols, conveys to others the feelings one has experienced, whereby people so infected by these feelings, also experience them.

To master this instrument the religious thinker must make a preliminary study of logic, just as the lawyer must study legal reasoning. This is no more heretical in the one case than in the other. And logic must be learned from the ancient masters, regardless of the fact that they were not Muslims.

Investigate what is, and not what pleases.

To attain this end we must secure a preponderance of virtue over vice and must endeavor to secure that the honest man may, even in this world, receive a lasting reward for his virtue. But in these great endeavors we are gravely hampered by the political institutions of today. What is to be done in these circumstances? To favor revolutions, overthrow everything, repel force by force?... No! We are very far from that. Every violent reform deserves censure, for it quite fails to remedy evil while men remain what they are, and also because wisdom needs no violence.

In Matthew 12:23 Christ says: "Either make the tree good, and its fruit good; or make the tree bad and its fruit bad," as if to say: "Let the one who wishes to have good fruit begin by planting a good tree." Therefore, let the person who wishes to do good works being not with the works but with the believing, for this alone makes a person good.

Faith exalts the human heart, by removing it from the market-place, making it sacred and unexchangeable. Under the jurisdiction of religion our deeper feelings are sacralized, so as to become raw material for the ethical life: the life lived in judgement.

Marriage is encouraged in China, not by the profitableness of children, but by the liberty of destroying them.

The hopes of the right-minded may be realized, those of fools are impossible.

The principle of rotation... in the body of [bank] directors... breaks in upon the esprit de corps so apt to prevail in permanent bodies; it gives a chance for the public eye penetrating into the sanctuary of those proceedings and practices, which the avarice of the directors may introduce for their personal emolument, and which the resentments of excluded directors, or the honesty of those duly admitted, might betray to the public; and it gives an opportunity at the end of the year, or at other periods, of correcting a choice, which on trial, proves to have been unfortunate.

Man is a useless passion.

Is not the reason of the confidence of the positive, critical, experimental scientists, and of the reverent attitude of the crowd towards their doctrines, still the same? At first it seems strange how the theory of evolution (which, like the redemption in theology, serves the majority as a popular expression of the whole new creed) can justify people in their injustice, and it seems as if the scientific theory dealt only with facts and did nothing but observe facts. But that only seems so. It seemed just the same in the case of theological doctrine: theology, it seemed, was only occupied with dogmas and had no relation to people's lives, and it seemed the same with regard to philosophy, which appeared to be occupied solely with transcendental reasonings. But that only seemed so. It was just the same with the Hegelian doctrine on a large scale and with the particular case of the Malthusian teaching.

The individual is reduced to a negligible quantity, perhaps less in his consciousness than in his practice and in the totality of his obscure emotional states that are derived from this practice. The individual has become a mere cog in an enormous organization of things and powers which tear from his hands all progress, spirituality, and value in order to transform them from their subjective form into the form of a purely objective life. It needs merely to be pointed out that the metropolis is the genuine arena of this culture which outgrows all personal life. Here in buildings and educational institutions, in the wonders and comforts of space-conquering technology, in the formations of community life, and in the visible institutions of the state, is offered such an overwhelming fullness of crystallized and impersonalized spirit that the personality, so to speak, cannot maintain itself under its impact.

My love, Alcibiades, which I hardly like to confess, would long ago have passed away, as I flatter myself, if I saw you loving your good things, or thinking that you ought to pass life in the enjoyment of them. Socrates speaking to Alcibiades

Without doubt, if we are to go back to that ultimate, integral experience, unwarped by the sophistications of theory, that experience whose elucidation is the final aim of philosophy, the flux of things is one ultimate generalization around which we must weave our philosophical system.

To get up in the morning, wash and then wait for some unforeseen variety of dread or depression. I would give the whole universe and all of Shakespeare for a grain of ataraxy.

'No one but you and one 'jade' I have fallen in love with, to my ruin. But being in love doesn't mean loving. You may be in love with a woman and yet hate her.

Pragmatism, in trying to turn experimental physics into a prototype of all science and to model all spheres of intellectual life after the techniques of the laboratory, is the counterpart of modern industrialism, for which the factory is the prototype of human existence, and which models all branches of culture after production on the conveyor belt.

Junz found revulsion growing strong within him. A planet full of people meant nothing against the dictates of economic necessity!

We ought so to behave to one another as to avoid making enemies of our friends, and at the same time to make friends of our enemies. 

Write as if thou wert alone in the universe and hadst nothing to fear from the jealousies and prejudices of the people. Otherwise thou wilt miss thy purpose.

I use the word nursing for want of a better. It has been limited to signify little more than the administration of medicines and the application of poultices. It ought to signify the proper use of fresh air, light, warmth, cleanliness, quiet, and the proper selection and administration of diet - all at the least expense of vital power to the patient.

The mob has always behaved in this way-eagerly open to bribes that cannot be honorably accepted, and dissolutely callous to degradation and insult that cannot be honorably endured.

My enemy is not the man who wrongs me, but the man who means to wrong me.

If democracy has become superfluous or annoying to the bourgeoisie, it is on the contrary necessary and indispensable to the working class. It is necessary to the working class because it creates the political forms (autonomous administration, electoral rights, etc.) which will serve the proletariat as fulcrums in its task of transforming bourgeois society. Democracy is indispensable to the working class because only through the exercise of its democratic rights, in the struggle for democracy, can the proletariat become aware of its class interests and its historic task.

In the study of ideas, it is necessary to remember that insistence on hard-headed clarity issues from sentimental feeling, as if it were a mist, cloaking the perplexities of fact. Insistence on clarity at all costs is based on sheer superstition as to the mode in which human intelligence functions. Our reasoning grasps at straws for premises and floats on gossamer for deductions.

What is a rebel? A man who says no. 

The mystical impulse in men is somehow a desire to possess the universe. In women, it's a desire to be possessed.

Lifetime is a child at play, moving pieces in a game.