The crime against nature will never make any great progress in society unless people are prompted to it by some particular custom.

Each citizen contributes to the revenues of the State a portion of his property in order that his tenure of the rest may be secure.

When a government lasts a long while, it deteriorates by insensible degrees. Republics end through luxury, monarchies through poverty.

When virtue is banished, ambition invades the minds of those who are disposed to receive it and avarice possesses the whole community.

As soon as man enters into a state of society he loses the sense of his weakness; equality ceases, and then commences the state of war.

Democracy is corrupted not only when the spirit of equality is corrupted, but likewise when they fall into a spirit of extreme equality.

But constant experience shows us that every man invested with power is apt to abuse it, and to carry his authority as far as it will go.

People here argue about religion interminably, but it appears that they are competing at the same time to see who can be the least devout.

With truths of a certain kind, it is not enough to make them appear convincing: one must also make them felt. Of such kind are moral truths.

The Ottoman Empire whose sick body was not supported by a mild and regular diet, but by a powerful treatment, which continually exhausted it.

When a government is arrived to that degree of corruption as to be incapable of reforming itself, it would not lose much by being new moulded.

When the savages of Louisiana wish to have fruit, they cut the tree at the bottom and gather the fruit. That is exactly a despotic government.

There are bad examples which are worse than crimes; and more states have perished from the violation of morality than from the violation of law.

Nature is just to all mankind, and repays them for their industry. She renders them industrious by annexing rewards in proportion to their labor.

[The Pope] will make the king believe that three are only one, that the bread he eats is not bread... and a thousand other things of the same kind.

The false notion of miracles comes of our vanity, which makes us believe we are important enough for the Supreme Being to upset nature on our behalf.

As men are affected in all ages by the same passions, the occasions which bring about great changes are different, but the causes are always the same.

The Christian religion is a stranger to mere despotic power. The mildness so frequently recommended in the Gospel is incompatible with the despotic rage.

I never listen to calumnies, because if they are untrue I run the risk of being deceived, and if they be true, of hating persons not worth thinking about.

The love of study is in us the only lasting passion. All the others quit us in proportion as this miserable machine which holds them approaches its ruins.

The mood and temper of the public in regard to the treatment of crime and criminals is one of the most unfailing tests of the civilisation of any country.

There is only one thing that can form a bond between men, and that is gratitude... we cannot give someone else greater power over us than we have ourselves.

We receive three educations, one from our parents, one from our school-masters, and one from the world. The third contradicts all that the first two teach us.

Study has been for me the sovereign remedy against all the disappointments of life. I have never known any trouble that an hour's reading would not dissipate.

Love of the republic in a democracy, is a love of the democracy; love of the democracy is that of equality. Love of the democracy is likewise that of frugality.

There are only two cases in which war is just: first, in order to resist the aggression of an enemy, and second, in order to help an ally who has been attacked.

Although born in a prosperous realm, we did not believe that its boundaries should limit our knowledge, and that the lore of the East should alone enlighten us.

In the birth of societies it is the chiefs of states who give it its special character; and afterward it is this special character that forms the chiefs of state.

To lend money without interest, is certainly an action laudable and extremely good; but it is obvious, that it is only a counsel of religion, and not a civil law.

We ought to be very cautious and circumspect in the prosecution of magic and heresy. The attempt to put down these two crimes may be extremely perilous to liberty.

Slavery, properly so called, is the establishment of a right which gives to one man such a power over another as renders him absolute master of his life and fortune.

False happiness renders men stern and proud, and that happiness is never communicated. True happiness renders them kind and sensible, and that happiness is always shared.

The pagan religion, which prohibited only some of the grosser crimes, and which stopped the hand but meddled not with the heart, might have crimes that were inexplicable.

Better it is to say that the government most comfortable to nature is that which best agrees with the humor and disposition of the people in whose favor it is established.

If we only wanted to be happy, it would be easy; but we want to be happier than other people, and that is almost always difficult, since we think them happier than they are.

The power of divorce can be given only to those who feel the inconveniences of marriage, and who are sensible of the moment when it is for their interest to make them cease.

In republican governments, men are all equal; equal they are also in despotic governments: in the former, because they are everything; in the latter, because they are nothing.

In the state of nature... all men are born equal, but they cannot continue in this equality. Society makes them lose it, and they recover it only by the protection of the law.

Experience constantly proves that every man who has power is impelled to abuse it; he goes on till he is pulled up by some limits. Who would say it! virtue even has need of limits.

As virtue is necessary in a republic, and honor in a monarchy, fear is what is required in a despotism. As for virtue, it is not at all necessary, and honor would be dangerous there.

There is no one, says another, whom fortune does not visit once in his life; but when she does not find him ready to receive her, she walks in at the door, and flies out at the window.

Honor sets all the parts of the body politic in motion, and by its very action connects them; thus each individual advances the public good, while he only thinks of promoting his own interest.

Religious wars are not caused by the fact that there is more than one religion, but by the spirit of intolerance... the spread of which can only be regarded as the total eclipse of human reason.

In bodies moved, the motion is received, increased, diminished, or lost, according to the relations of the quantity of matter and velocity; each diversity is uniformity, each change is constancy.

One more organ or one less in our body would give us a different intelligence. In fact, all the established laws as to why our body is a certain way would be different if our body were not that way.

If I knew something that would serve my country but would harm mankind, I would never reveal it; for I am a citizen of humanity first and by necessity, and a citizen of France second, and only by accident

Law in general is human reason, inasmuch as it governs all the inhabitants of the earth: the political and civil laws of each nation ought to be only the particular cases in which human reason is applied.

In every government there are three sorts of power: the legislative; the executive in respect to things dependent on the law of nations; and the executive in regard to matters that depend on the civil law.

What unhappy beings men are! They constantly waver between false hopes and silly fears, and instead of relying on reason they create monsters to frighten themselves with, and phantoms which lead them astray.

The coffee is prepared in such a way that it makes those who drink it witty: at least there is not a single soul who, on quitting the house, does not believe himself four times wittier that when he entered it.

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