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.
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.
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.
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.
We must have constantly present in our minds the difference between independence and liberty. Liberty is a right of doing whatever the laws permit, and if a citizen could do what they forbid he would no longer be possessed of liberty.
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.
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.
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.
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?