Real wisdom is not the knowledge of everything, but the knowledge of which things in life are necessary, which are less necessary, and which are completely unnecessary to know.

Our body is a machine for living. It is organized for that, it is its nature. Let life go on in it unhindered and let it defend itself.

Art is not a pleasure, a solace, or an amusement; art is great matter.

Knowledge is real knowledge only when it is acquired by the efforts of your intellect, not by memory

If you want to be happy, try only to please God, not people.

So he lived, not knowing and not seeing any chance of knowing what he was and for what purpose he had been placed in the word.

It is within my power either to serve God or not to serve Him. Serving Him, I add to my own good and the good of the whole world. Not serving Him, I forfeit my own good and deprive the world of that good, which was in my power to create.