If you look for truth, you may find comfort in the end; if you look for comfort you will not get either comfort or truth only soft soap and wishful thinking to begin, and in the end, despair.

Health is the soul that animates all the enjoyments of life, which fade and are tasteless without it.

I know that I am intelligent, because I know that I know nothing.

I decided to sell my drawings. However, I didn't want people to buy my drawings because the professor of physics isn't supposed to be able to draw - isn't that wonderful - so I made up a false name.

It is a mania shared by philosophers of all ages to deny what exists and to explain what does not exist.