1、Je pense, donc je suis
2、A state is better governed which has few laws, and those laws strictly observed.
3、Nothing is more fairly distributed than common sense: no one thinks he needs more of it than he already has.
4、The senses deceive from time to time, and it is prudent never to trust wholly those who have deceived us even once.
5、The greatest minds are capable of the greatest vices as well as of the greatest virtues.
6、The first precept was never to accept a thing as true until I knew it as such without a single doubt.
7、In order to improve the mind, we ought less to learn, than to contemplate.
8、Except our own thoughts, there is nothing absolutely in our power. I think; therefore I am.
9、Perfect numbers like perfect men are very rare.
10、One cannot conceive anything so strange and so implausible that it has not already been said by one philosopher or another.
11、When it is not in our power to follow what is true, we ought to follow what is most probable.
12、If you would be a real seeker after truth, it is necessary that at least once in your life you doubt, as far as possible, all things.