Treat your inferiors as you would be treated by your betters.

I maintain that in every special natural doctrine only so much science proper is to be met with as mathematics; for... science proper, especially of nature, requires a pure portion, lying at the foundation of the empirical, and based upon à priori knowledge of natural things. ...the conception should be constructed. But the cognition of the reason through construction of conceptions is mathematical. A pure philosophy of nature in general, namely, one that only investigates what constitutes a nature in general, may thus be possible without mathematics; but a pure doctrine of nature respecting determinate natural things (corporeal doctrine and mental doctrine), is only possible by means of mathematics; and as in every natural doctrine only so much science proper is to be met with therein as there is cognition à priori, a doctrine of nature can only contain so much science proper as there is in it of applied mathematics.

Who am I? Subject and object in one - contemplating and contemplated, thinking and thought of. As both must I have become what I am.

The Protestant churches generally hold that the elements of the sacrament are flesh and blood only in a tropical sense; they nourish our souls as meat and the juice of it would our bodies. But the Catholics maintain that they are literally just that; although they possess all the sensible qualities of wafer-cakes and diluted wine. But we can have no conception of wine except what may enter into a belief, either -

Civil government does by its nature include much that is mechanical, and must be treated accordingly. We term it indeed, in ordinary language, the Machine of Society, and talk of it as the grand working wheel from which all private machines must derive, or to which they must adapt, their movements.

Education will enable young people quickly to familiarize themselves with the whole system of production and to pass from one branch of production to another in response to the needs of society or their own inclinations. It will, therefore, free them from the one-sided character which the present-day division of labor impresses upon every individual. Communist society will, in this way, make it possible for its members to put their comprehensively developed faculties to full use. But, when this happens, classes will necessarily disappear. It follows that society organized on a communist basis is incompatible with the existence of classes on the one hand, and that the very building of such a society provides the means of abolishing class differences on the other.

The wrinkles of a nation are as visible as those of an individual.

Men are most apt to believe what they least understand.

I will remark again, however, as a fact not unimportant to be understood, that the different sphere constitutes the grand origin of such distinction; that the Hero can be Poet, Prophet, King, Priest or what you will, according to the kind of world he finds himself born into. I confess, I have no notion of a truly great man that could not be all sorts of men.

If we allow them any influence in our conscience, they become the cloak of evil, heresies and blasphemies.

We must now ask how changes of this sort can come about, considering first discoveries, or novelties of fact, and then inventions, or novelties of theory. That distinction between discovery and invention or between fact and theory will, however, immediately prove to be exceedingly artificial.

How many people ruin themselves by laying out money on trinkets of frivolous utility? What pleases these lovers of toys is not so much the utility, as the aptness of the machines which are fitted to promote it. All their pockets are stuffed with little conveniences. They contrive new pockets, unknown in the clothes of other people, in order to carry a greater number. They walk about loaded with a multitude of baubles, in weight and sometimes in value not inferior to an ordinary Jew's-box, some of which may sometimes be of some little use, but all of which might at all times be very well spared, and of which the whole utility is certainly not worth the fatigue of bearing the burden.

I accept nothing on authority. A hypothesis must be backed by reason, or else it is worthless.

Either be silent or say something better than silence.

There were many special laws affecting the several kings inscribed about the temples, but the most important was the following: They were not to take up arms against one another, and they were all to come to the rescue if any one in any of their cities attempted to overthrow the royal house; like their ancestors, they were to deliberate in common about war and other matters, giving the supremacy to the descendants of Atlas. And the king was not to have the power of life and death over any of his kinsmen unless he had the assent of the majority of the ten.

Consider the great elements of human enjoyment, the attainments and possessions that exalt man's life to its present height, and see what part of these he owes to institutions, to Mechanism of any kind; and what to the instinctive, unbounded force, which Nature herself lent him.

There is no virtue they should be excited to, nor fault they should be kept from, which I do not think they may be convinced of; but it must be by such reasons as their age and understandings are capable of, and those propos'd always in very few and plain words.

His Mohammed, as has been said, commands that ruling is to be done by the sword, and in his Koran the sword is the commonest and noblest work. Thus the Turk is, in truth, nothing but a murderer or highwayman, as his deeds show before men's eyes.

But your crime will be there, one hundred times denied, always there, dragging itself behind you. Then you will finally know that you have committed your life with one throw of the die, once and for all, and there is nothing you can do but tug our crime along until your death. Such is the law, just and unjust, of repentance. Then we will see what will become of your young pride.

O immortal gods! Men do not realize how great a revenue parsimony can be!

To two men living the same number of years, the world always provides the same sum of experiences. It is up to us to be conscious of them.

I have all the defects of other people yet everything they do seems to me inconceivable.

He is dead, and my hatred has died with him.

Is a democracy, such as we know it, the last improvement possible in government? Is it not possible to take a step further towards recognizing and organizing the rights of man? There will never be a really free and enlightened State until the State comes to recognize the individual as a higher and independent power, from which all its own power and authority are derived, and treats him accordingly. I please myself with imagining a State at least which can afford to be just to all men, and to treat the individual with respect as a neighbor; which even would not think it inconsistent with its own repose if a few were to live aloof from it, not meddling with it, nor embraced by it, who fulfilled all the duties of neighbors and fellow-men. A State which bore this kind of fruit, and suffered it to drop off as fast as it ripened, would prepare the way for a still more perfect and glorious State, which also I have imagined, but not yet anywhere seen.

I knew a parson who frightened his congregation terribly by telling them that the second coming was very imminent indeed, but they were much consoled when they found that he was planting trees in his garden.

Antisthenes ... said once to a youth from Pontus who was on the point of coming to him to be his pupil, and was asking him what things he wanted, "You want a new book, and a new pen, and a new tablet;"

Read not to contradict and confute, nor to believe and take for granted, nor to find talk and discourse, but to weigh and consider.

All who delight in the pleasures of the belly, exceeding all measure in eating and drinking and love, find that the pleasures are brief and last but a short while-only so long as they are eating and drinking-but the pains that come after are many and endure. The longing for the same things keeps ever returning, and whenever the objects of one's desire are realized forthwith the pleasure vanishes, and one has no further use for them. The pleasure is brief, and once more the need for the same things returns.

When things fall out opportunely for the person concerned, he is not apt to be critical about the how or why, his own immediate personal convenience seeming a sufficient reason for the strangest oddities and revolutions in our sublunary things.

A human being possessed by a belief and not eager to pass it on to others is a phenomenon alien to the earth, where our mania for salvation makes life unbreathable.

It is love that leniently and mercifully says: I forgive you everything-if you are forgiven only little, then it is because you love only little. Justice severely sets the boundary and says: No further! This is the limit. For you there is no forgiveness, and there is nothing more to be said.

First, [the bourgeoisie] must recognize his own impotence, his incapacity to believe in a sense of history, even if his reason leans towards the truth, the passions and prejudices produced by his class position, prevent him from accepting it. So he should not exert himself with proving the truth of the historical mission of the working class; rather, he should learn to subdue his petty bourgeois passions and prejudices. He should take lessons from those who were once as important as he is now but are ready to risk all for the revolutionary Cause.

Certainly no nation ever before abandoned to the avarice and jugglings of private individuals to regulate according to their own interests, the quantum of circulating medium for the nation - to inflate, by deluges of paper, the nominal prices of property, and then to buy up that property at 1s. in the pound, having first withdrawn the floating medium which might endanger a competition in purchase. Yet this is what has been done, and will be done, unless stayed by the protecting hand of the legislature. The evil has been produced by the error of their sanction of this ruinous machinery of banks; and justice, wisdom, duty, all require that they should interpose and arrest it before the schemes of plunder and spoliation desolate the country.

A strong memory is commonly coupled with infirm judgment.

If you try to imagine, as nearly as you can, what an amount of misery, pain and suffering of every kind the sun shines upon in its course, you will admit that it would be much better if, on the earth as little as on the moon, the sun were able to call forth the phenomena of life; and if, here as there, the surface were still in a crystalline state.

Fairness means not to use fraud and trickery in the exchange of commodities and services and the exchange of feelings.

The Mass is the greatest blasphemy of God, and the highest idolatry upon earth, an abomination the like of which has never been in Christendom since the time of the Apostles.

Go into the London Stock Exchange - a more respectable place than many a court - and you will see representatives from all nations gathered together for the utility of men. Here Jew, Mohammedan and Christian deal with each other as though they were all of the same faith, and only apply the word infidel to people who go bankrupt. Here the Presbyterian trusts the Anabaptist and the Anglican accepts a promise from the Quaker.

Newspapers are the second hand of history. This hand, however, is usually not only of inferior metal to the other hands, it also seldom works properly.

Diversity makes critical argument fruitful. ...[P]artners in an argument must share ...the wish to know, and the readiness to learn from the other ...by severely criticizing his views... and hearing... [the] reply. ...the so-called method of science consists in this kind of criticism.

Prussia had been the creation of a dynasty that had the nobility, the army and the higher bureaucracy for its backbone. The primary element was not the 'nation' or the Volk. Rather the state, more than the land or the ethnos, constituted the real foundation and unifying principle. There was none of that in Hitlerism.

It appears... that a work similar in its object and general conception to that of Adam Smith, but adapted to the more extended knowledge and improved ideas of the present age, is the kind of contribution which Political Economy at present requires. The Wealth of Nations is in many parts obsolete, and in all, imperfect. Political Economy... has grown up almost from infancy since the time of Adam Smith; and the philosophy of society... has advanced many steps beyond the point at which he left it.

If a concept lacks an essence, nothing will ever be found that completely fits that concept. If you are lacking in the concept of human being, it will immediately expose that you are something individual, something that cannot be expressed by the term human being, thus, in every instance, an individual human being.

All-powerful god, who am I but the fear that I inspire in others?

By incestuous symbiosis is meant the tendency to stay tied to the mother and to her equivalents - blood, family, tribe - to fly from the unbearable weight of responsibility, of freedom, of awareness, and to be protected and loved in a state of certainty dependence that the individual pays for with the ceasing of his own human development.