Not to know certain things is a great part of wisdom

Even God cannot make two times two not make four.

A man cannot govern a nation if he cannot govern a city; he cannot govern a city if he cannot govern a family; he cannot govern a family unless he can govern himself; and he cannot govern himself unless his passions are subject to reason

Liberty is the power that we have over ourselves

With the exercise of a little care, the nettle could be made useful; it is neglected and it becomes hurtful. It is exterminated. How many men resemble the nettle!" He added with a pause: "Remember this, my friends: there are no such things as bad plants or bad men. There are only bad cultivators.

...Nobody knows like a woman how to say things that are both sweet and profound. Sweetness and depth, this is all of woman; this is Heaven.