I learned just enough in school to figure out that everything is not all there is to know.

I do not know what 'moss' stands for in the proverb, but if it stood for useful knowledge... I gathered more moss by rolling than I ever did at school."

Optimism is the true moral courage

I got a job immediately after leaving high school; I was lucky - three dollars a week and all I could eat, working on a vegetable truck.

Children have to be educated, but they have also to be left to educate themselves

Until you're grown-up they send you to reform school. After you're grown-up they send you to the penitentiary.