He who is not contented with what he has, would not be contented with what he would like to have.

The reason why we have to acquire wealth is the body, because we are slaves in its service.

Flattery is like friendship in show, but not in fruit.

The real artist, who knew what he was imitating, would be interested in realities and not in imitations; and would desire to leave as memorials of himself works many and fair; and, instead of being the author of encomiums, he would prefer to be the theme of them.

In every one of us there are two ruling and directing principles, whose guidance we follow wherever they may lead; the one being an innate desire of pleasure; the other, an acquired judgment which aspires after excellence.

One ought not to return injustice, nor do evil to anybody in the world, no matter what one may have suffered from them.

Life without enquiry is not worth living for a man.