With the fearful strain that is on me night and day, if I did not laugh I should die.

At the touch of love everyone becomes a poet.

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.

To love someone deeply gives you strength. Being loved by someone deeply gives you courage.