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.

Happy the people whose annals are tiresome.

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.

You have to study a great deal to know a little.

Not to be loved is a misfortune, but it is an insult to be loved no longer.

If I knew of something that could serve my nation but would ruin another, I would not propose it to my prince, for I am first a man and only then a Frenchman... because I am necessarily a man, and only accidentally am I French.

The law of nations is naturally founded on this principle, that different nations ought in time of peace to do one another all the good they can, and in time of war as little injury as possible, without prejudicing their real interests.

Do you think that God will punish them for not practicing a religion which he did not reveal to them?

I have always observed that to succeed in the world one should appear like a fool but be wise.

The success of most things depends upon knowing how long it will take to succeed.

When the body of the people is possessed of the supreme power, it is called a democracy.

Men, who are rogues individually, are in the mass very honorable people.

There is no greater tyranny than that which is perpetrated under the shield of the law and in the name of justice.

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.

Power ought to serve as a check to power.

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.

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.

Liberty is the right of doing whatever the laws permit.

Life was given to me as a favor, so I may abandon it when it is one no longer.

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.

Weak minds exaggerate too much the wrong done to the Africans.

The object of war is victory; that of victory is conquest; and that of conquest preservation.

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.

Republics end through luxury; monarchies through poverty.

I have read descriptions of Paradise that would make any sensible person stop wanting to go there.

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.

Thus the creation, which seems an arbitrary act, supposes laws as invariable as those of the fatality of the Atheists. It would be absurd to say that the Creator might govern the world without those rules, since without them it could not subsist.

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.

The state of slavery is in its own nature bad.

The deterioration of a government begins almost always by the decay of its principles.

When the legislative and executive powers are united in the same person, or in the same body of magistrates, there can be no liberty; because apprehensions may arise, lest the same monarch or senate should enact tyrannical laws, to execute them in a tyrannical manner.

Man, as a physical being, is like other bodies governed by invariable laws.

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.

Each particular society begins to feel its strength, whence arises a state of war between different nations.

Society is the union of men and not the men themselves.

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.

Raillery is a mode of speaking in favor of one's wit at the expense of one's better nature.

A man should be mourned at his birth, not at his death.

They who assert that a blind fatality produced the various effects we behold in this world talk very absurdly; for can anything be more unreasonable than to pretend that a blind fatality could be productive of intelligent beings?

There are three species of government: republican, monarchical, and despotic.

We used to think that revolutions are the cause of change. Actually it is the other way around: change prepares the ground for revolution.

I must stress here the point that I appreciate clarity, order, meaning, structure, rationality: they are necessary to whatever provisional stability we have, and they can be the agents of gradual and successful change.

Excuses change nothing, but make everyone feel better.

So, first you have to be able to play with a metronome. Then you take your freedom. If you play in an orchestra, you got to watch the conductor, he is like a metronome, but it is more difficult because he can change rhythms.

I wouldn't change Buffy for anything and I wouldn't change the course in which she has evolved but it is nice to be able to do something that is a little different.

For example, UNICEF works with governments to change legislation such as in India where a law was passed raising the age of compulsory school completion to keep children in school and away from the workplace for longer.

Great joy, especially after a sudden change of circumstances, is apt to be silent, and dwells rather in the heart than on the tongue.

I still feel that a movie has to attempt to say something - even if it fails miserably. But I've sort of given up on believing that I'm going to change the world with every film I choose to act in.

Don't knock the weather; nine-tenths of the people couldn't start a conversation if it didn't change once in a while.