For two thousand years, Jesus has revenged himself on us for not having died on a sofa.

Man needs difficulties; they are necessary for health.

It is necessary that every thing which is harmonized, should be generated from that which is void of harmony, and that which is void of harmony from that which is harmonized. ...But there is no difference, whether this is asserted of harmony, or of order, or composition... the same reason will apply to all of these.

Where children are, there is a golden age.

One gloomy and pessimistic writer with a powerful style affects a whole generation of writers, who in turn affect almost every educated person in the country.

It is said that desire is a product of the will, but the converse is in fact true: will is a product of desire.

Nations are barbarian in their infancy but not savage. The barbarian is a proportional mean between the savage and the citizen. He already possesses no end of knowledge: he has habitations, some agriculture, domestic animals, laws, a cult, regular tribunals; he lacks only the sciences.

What does the future, that half of time, matter to the man who is infatuated with eternity?

To err is human also in so far as animals seldom or never err, or at least only the cleverest of them do so.

In proportion as a man's interests become humane and his efforts rational, he appropriates and expands a common life, which reappears in all individuals who reach the same impersonal level of ideas.

We scarce ever had a prince, who by fraud, or violence, had not made some infringement on the constitution. We scarce ever had a parliament which knew, when it attempted to set limits to the royal authority, how to set limits to its own. Evils we have had continually calling for reformation, and reformations more grievous than any evils. Our boasted liberty sometimes trodden down, sometimes giddily set up, and ever precariously fluctuating and unsettled; it has only been kept alive by the blasts of continual feuds, wars, and conspiracies.

The friend, enemy, and combat concepts receive their real meaning precisely because they refer to the real possibility of physical killing. War follows from enmity. War is the existential negation of the enemy.

Happiest are the people who give most happiness to others.

Revolution is like the daughters of Pelias: it cuts humanity to pieces in order to rejuvenate it.

Married people pledge love for each other throughout eternity. Well, now, that is easy enough but does not mean very much, for if one is finished with time one is probably finished with eternity. If, instead of saying "throughout eternity," the couple would say, "until Easter, until next May Day," then what they say would make some sense, for then they would be saying something and also something they perhaps could carry out.

Is not marriage an open question, when it is alleged, from the beginning of the world, that such as are in the institution wish to get out, and such as are out wish to get in?

Thus, while the refugee serfs only wished to be free to develop and assert those conditions of existence which were already there, and hence, in the end, only arrived at free labour, the proletarians, if they are to assert themselves as individuals, will have to abolish the very condition of their existence hitherto (which has, moreover, been that of all society up to the present), namely, labour. Thus they find themselves directly opposed to the form in which, hitherto, the individuals, of which society consists, have given themselves collective expression, that is, the State. In order, therefore, to assert themselves as individuals, they must overthrow the State.

Most of our literature and social philosophy after 1850 was the voice of freedom against authority, of the child against the parent, of the pupil against the teacher. Through many years I shared in that individualistic revolt. I do not regret it; it is the function of youth to defend liberty and innovation, of the old to defend order and tradition, and of middle age to find a middle way. But now that I too am old, I wonder whether the battle I fought was not too completely won. Let us say humbly but publicly that we resent corruption in politics, dishonesty in business, faithlessness in marriage, pornography in literature, coarseness in language, chaos in music, meaninglessness in art.

He who has begun has half done. Dare to be wise; begin!

A country cannot subsist well without liberty, nor liberty without virtue.

But in the end one needs more courage to live than to kill himself.

What a singular destiny has been that of this remarkable man! To be regarded in his own age as a classic, and in ours as a companion! To receive from his contemporaries that full homage which men of genius have in general received only from posterity! To be more intimately known to posterity than other men are known to their contemporaries!

Middle age begins with marriage; for then work and responsibility replace carefree play, passion surrenders to the limitations of social order, and poetry yields to prose.

I find the Englishman to be him of all men who stands firmest in his shoes. They have in themselves what they value in their horses, - mettle and bottom.

During the last three centuries, there has been, by virtue of the Inquisition, a greater enjoyment of peace, and happiness, in Spain, than in the other nations of Europe.

Among the sayings and discourses imputed to him [Jesus] by his biographers, I find many passages of fine imagination, correct morality, and of the most lovely benevolence; and others again of so much ignorance, so much absurdity, so much untruth, charlatanism, and imposture, as to pronounce it impossible that such contradictions should have proceeded from the same being. I separate, therefore, the gold from the dross; restore to Him the former, and leave the latter to the stupidity of some, and roguery of others of His disciples. Of this band of dupes and impostors, Paul was the great Coryphaeus, and first corruptor of the doctrines of Jesus. These palpable interpolations and falsifications of His doctrines, led me to try to sift them apart.

It is a profoundly erroneous truism, repeated by all copy-books and by eminent people when they are making speeches, that we should cultivate the habit of thinking of what we are doing. The precise opposite is the case. Civilization advances by extending the number of important operations which we can perform without thinking about them. Operations of thought are like cavalry charges in a battle - they are strictly limited in number, they require fresh horses, and must only be made at decisive moments.

Who lives longer? the man who takes heroin for two years and dies, or a man who lives on roast beef, water and potatoes 'till 95? One passes his 24 months in eternity. All the years of the beefeater are lived only in time.

The working class will acquire the sense of the new discipline, the freely assumed self-discipline of the Social Democracy, not as a result of the discipline imposed on it by the capitalist state, but by extirpating, to the last root, its old habits of obedience and servility.

Love, a tacit agreement between two unhappy parties to overestimate each other. p. 111, first American edition

Permanent mass unemployment destroys the moral foundations of the social order. The young people, who, having finished their training for work, are forced to remain idle, are the ferment out of which the most radical political movements are formed. In their ranks the soldiers of the coming revolutions are recruited.

It is only the ignorant who despise education.

Everything harmonizes with me, which is harmonious to thee, O Universe. Nothing for me is too early or too late, which is in due time for thee. There is one light of the sun, though it is interrupted by walls, mountains and infinite other things. There is one common substance, though it is distributed among countless bodies which have their several qualities. There is one soul, though it is distributed among several natures and individual limitations. There is one intelligent soul, though it seems to be divided.

I put my body through its paces like a war horse; I keep it lean, sturdy, prepared. I harden it and I pity it. I have no other steed. I keep my brain wide awake, lucid, unmerciful. I unleash it to battle relentlessly so that, all light, it may devour the darkness of the flesh. I have no other workshop where I may transform darkness into light. I keep my heart flaming, courageous, restless. I feel in my heart all commotions and all contradictions, the joys and sorrows of life. But I struggle to subdue them to a rhythm superior to that of the mind, harsher than that of my heart - to the ascending rhythm of the Universe.

We take foreigners to be incomplete Americans - convinced that we must help and hasten their evolution.

If life can no longer be narrated, wisdom deteriorates, and its place is taken by problem-solving.

A good reputation is more valuable than money.

The system becomes more coherent as it is further extended. The elements which we require for explaining a new class of facts are already contained in our system. Different members of the theory run together, and we have thus a constant convergence to unity. In false theories, the contrary is the case.

To found a family. I think it would have been easier for me to found an empire.

How easy it is to repel and to wipe away every impression which is troublesome or unsuitable, and immediately to be in all tranquility. To shrug it all off and wipe it clean--every annoyance and distraction--and reach utter stillness. Child's play.

One unscrupulous distortion of the truth tends to beget other and opposite distortions.

I am absolutely prepared to talk about the spiritual life of an electronic computer: to state that it is reflecting or is in a bad mood... The question whether the machine really feels or ponders, or whether it merely looks as though it did, is of course absolutely meaningingless.

The most any one can do is to confess as candidly as he can the grounds for the faith that is in him, and leave his example to work on others as it may.

The most perfect ape cannot draw an ape; only man can do that; but, likewise, only man regards the ability to do this as a sign of superiority.

It is impossible to live a pleasant life without living wisely and honorably and justly, and it is impossible to live wisely and honorably and justly without living pleasantly. Whenever any one of these is lacking, when, for instance, the man is not able to live wisely, though he lives honorably and justly, it is impossible for him to live a pleasant life.

Where danger shews it self, apprehension cannot, without stupidity, be wanting; where danger is, sense of danger should be; and so much fear as should keep us awake, and excite our attention, industry, and vigour; but not to disturb the calm use of our reason, nor hinder the execution of what that dictates.

Animals no doubt have different interests from humans, and may experience different pleasures and pains, but the principle of equal consideration for similar interests still holds, and pleasures and pains of similar intensity and duration should be given equal weight, whether they are experienced by humans or by animals.