There is a sort of enthusiasm in all projectors, absolutely necessary for their affairs, which makes them proof against the most fatiguing delays, the most mortifying disappointments, the most shocking insults; and what is severer than all, the presumptuous judgments of the ignorant upon their designs.

The person who grieves, suffers his passion to grow upon him; he indulges it, he loves it; but this never happens in the case of actual pain, which no man ever willingly endured for any considerable time.

It is reconciled in policy; and politics ought to be adjusted, not to human reasonings, but to human nature; of which the reason is but a part; and by no means the greatest part.

I could show, that the same faction has, in one reign, promoted popular seditions, and, in the next, been a patron of tyranny; I could show, that they have all of them betrayed the public safety at all times, and have very frequently with equal perfidy made a market of their own cause, and their own associates. I could show how vehemently they have contended for names, and how silently they have passed over things of the last importance.

One may observe, that men of all persuasions confine the word persecution, and all the ill ideas of injustice and violence which belong to it, solely to those severities which are exercised upon themselves, or upon the party they are inclined to favour. Whatever is inflicted upon others, is a just punishment upon obstinate impiety, and not a restraint upon conscientious differences.

Justice was in all countries originally administered by the priesthood; nor indeed could laws in their first feeble state have either authority or sanction, so as to compel men to relinquish their natural independence, had they not appeared to come down to them enforced by beings of more than human power. The first openings of civility have been everywhere made by religion. Amongst the Romans, the custody and interpretation of the laws continued solely in the college of the pontiffs for above a century.

I am convinced that we have a degree of delight, and that no small one, in the real misfortunes and pains of others.

There is, however, a limit at which forbearance ceases to be a virtue.

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 zealous never fail to draw political inferences from religious tenets, by which they interest the magistrate in the dispute; and then to the heat of a religious fervour is added the fury of a party zeal. All intercourse is cut off between the parties. They lose all knowledge of each other, tho' countrymen and neighbours, and are therefore easily imposed upon with the most absurd stories concerning each other's opinions and practices. They judge of the hatred of the adverse side by their own. Then fear is added to their hatred; and preventive injuries arise from their fear. The remembrance of the past, the dread of the future, the present ill, will join together to urge them forward to the most violent courses.Such is the manner of proceeding of religious parties towards each other.

In the interval between his campaigns Agricola was employed in the great labours of peace. He knew that the general must be perfected by the legislator; and that the conquest is neither permanent nor honourable, which is only an introduction to tyranny... In short, he subdued the Britons by civilizing them; and made them exchange a savage liberty for a polite and easy subjection. His conduct is the most perfect model for those employed in the unhappy, but sometimes necessary, task of subduing a rude and free people.

No passion so effectually robs the mind of all its powers of acting and reasoning as fear.

It is a general popular error to suppose the loudest complainers for the publick to be the most anxious for its welfare.

The most obvious division of society is into rich and poor; and it is no less obvious, that the number of the former bear a great disproportion to those of the latter. The whole business of the poor is to administer to the idleness, folly, and luxury of the rich; and that of the rich, in return, is to find the best methods of confirming the slavery and increasing the burdens of the poor. In a state of nature, it is an invariable law, that a man's acquisitions are in proportion to his labours. In a state of artificial society, it is a law as constant and as invariable, that those who labour most enjoy the fewest things; and that those who labour not at all have the greatest number of enjoyments. A constitution of things this, strange and ridiculous beyond expression! We scarce believe a thing when we are told it, which we actually see before our eyes every day without being in the least surprised.

In all persuasions the bigots are persecutors; the men of a cool and reasonable piety are favourers of toleration; because the former sort of men not taking the pains to be acquainted with the grounds of their adversaries tenets, conceive them to be so absurd and monstrous, that no man of sense can give into them in good earnest. For which reason they are convinced that some oblique bad motive induces them to pretend to the belief of such doctrines, and to the maintaining of them with obstinacy. This is a very general principle in all religious differences, and it is the corner stone of all persecution.

These principles it is necessary strictly to attend to, because they will serve much to explain the whole course both of government and real property, wherever the German nations obtained a settlement; the whole of their government depending for the most part upon two principles in our nature,-ambition, that makes one man desirous, at any hazard or expense, of taking the lead amongst others; and admiration, which makes others equally desirous of following him from the mere pleasure of admiration, and a sort of secondary ambition, one of the most universal passions among men. These two principles, strong both of them in our nature, create a voluntary inequality and dependence.

When any work seems to have required immense force and labor to affect it, the idea is grand. Stonehenge, neither for disposition nor ornament, has anything admirable; but those huge rude masses of stone, set on end, and piled each on other, turn the mind on the immense force necessary for such a work. Nay, the rudeness of the work increases this cause of grandeur, as it excludes the idea of art and contrivance; for dexterity produces another sort of effect, which is different enough from this.

The Crown of Great Britain cannot, in my opinion, be too magnificent. Let us see some great public works set on foot; let it never be said, that the Commons of Great Britain failed in what they owe to the first Crown in the world. Looking up to royalty, I do say, it is the oldest and one of the best parts of our constitution. I wish it should look like royalty; that it should look like a King; like a King of Great Britain.

The rich in all societies may be thrown into two classes. The first is of those who are powerful as well as rich, and conduct the operations of the vast political machine. The other is of those who employ their riches wholly in the acquisition of pleasure. As to the first sort, their continual care and anxiety, their toilsome days and sleepless nights, are next to proverbial. These circumstances are sufficient almost to level their condition to that of the unhappy majority; but there are other circumstances which place them in a far lower condition. Not only their understandings labour continually, which is the severest labour, but their hearts are torn by the worst, most troublesome, and insatiable of all passions, by avarice, by ambition, by fear and jealousy. No part of the mind has rest. Power gradually extirpates from the mind every humane and gentle virtue. Pity, benevolence, friendship, are things almost unknown in high stations.

Laws, like houses, lean on one another.

The writers against religion, whilst they oppose every system, are wisely careful never to set up any of their own.

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

There is only one passion, the passion for happiness.

The world is the house of the strong. I shall not know until the end what I have lost or won in this place, in this vast gambling den where I have spent more than sixty years, dicebox in hand, shaking the dice.

The first promise exchanged by two beings of flesh was at the foot of a rock that was crumbling into dust; they took as witness for their constancy a sky that is not the same for a single instant; everything changed in them and around them, and they believed their hearts free of vicissitudes. O children! always children!

Gaiety - a quality of ordinary men. Genius always presupposes some disorder in the machine.

Good music is very close to primitive language.

The infant runs toward it with its eyes closed, the adult is stationary, the old man approaches it with his back turned.

It has been said that love robs those who have it of their wit, and gives it to those who have none.

Power acquired by violence is only a usurpation, and lasts only as long as the force of him who commands prevails over that of those who obey.

Patriotism is an ephemeral motive that scarcely ever outlasts the particular threat to society that aroused it.

There is no moral precept that does not have something inconvenient about it.

When shall we see poets born? After a time of disasters and great misfortunes, when harrowed nations begin to breathe again. And then, shaken by the terror of such spectacles, imaginations will paint things entirely strange to those who have not witnessed them.

When one compares the talents one has with those of a Leibniz, one is tempted to throw away one's books and go die quietly in the dark of some forgotten corner.

Scepticism is the first step towards truth. Variant: A thing is not proved just because no one has ever questioned it. What has never been gone into impartially has never been properly gone into. Hence skepticism is the first step toward truth. It must be applied generally, because it is the touchstone.

Do you see this egg? With this you can topple every theological theory, every church or temple in the world. What is it, this egg, before the seed is introduced into it? An insentient mass. And after the seed has been introduced to into it? What is it then? An insentient mass. For what is the seed itself other than a crude and inanimate fluid? How is this mass to make a transition to a different structure, to sentience, to life? Through heat. And what will produce that heat in it? Motion. "Conversation Between D'Alembert and Diderot", as quoted in Selected Writings (1966) edited by Lester G. Crocker, and The Enlightenment and the Intellectual Foundations of Modern Culture (2004) by Louis K Dupré, p. 30 Variant translation: See this egg. It is with this that all the schools of theology and all the temples of the earth are to be overturned.

Pithy sentences are like sharp nails which force truth upon our memory.

In order to shake a hypothesis, it is sometimes not necessary to do anything more than push it as far as it will go.

Jacques said that his master said that everything good or evil we encounter here below was written on high.

To attempt the destruction of our passions is the height of folly. What a noble aim is that of the zealot who tortures himself like a madman in order to desire nothing, love nothing, feel nothing, and who, if he succeeded, would end up a complete monster!

Gratitude is a burden, and every burden is made to be shaken off.

Man was born to live with his fellow human beings. Separate him, isolate him, his character will go bad, a thousand ridiculous affects will invade his heart, extravagant thoughts will germinate in his brain, like thorns in an uncultivated land.

The good of the people must be the great purpose of government. By the laws of nature and of reason, the governors are invested with power to that end. And the greatest good of the people is liberty. It is to the state what health is to the individual.

The possibility of divorce renders both marriage partners stricter in their observance of the duties they owe to each other. Divorces help to improve morals and to increase the population.

I am beginning to feel that I am growing old; soon, I shall have to eat mush like children. I shall no longer be able to speak, which will be a rather great advantage for others and but a small inconvenience for myself.... The time in which I count in years is gone; that in which I count in days is here.... I had thought that the fibers of the heart would grow callous with age, it's not at all the case. I am not sure that my sensitivity hasn't increased; everything moves me, affects me.... To fade out between a man feeling your pulse and another bothering your head; not to know where one comes from, why one came, where one is going ...

Shakespeare's fault is not the greatest into which a poet may fall. It merely indicates a deficiency of taste.

Only a very bad theologian would confuse the certainty that follows revelation with the truths that are revealed. They are entirely different things.

To prove the Gospels by a miracle is to prove an absurdity by something contrary to nature.

Wandering in a vast forest at night, I have only a faint light to guide me. A stranger appears and says to me: "My friend, you should blow out your candle in order to find your way more clearly." This stranger is a theologian.

The best doctor is the one you run for and can't find.