You must never feel badly about making mistakes.
Many of the things which can never be, often are.
Everybody is so terribly sensitive about the things they know best.
I remember when I was a kid in school and teachers would explain things to me about what I read, and I'd think, Where did they get that? I didn't read that in there. Later you look at it and think, That's kind of an interesting idea
Expect everything so that nothing comes unexpected.
Have you ever heard a blindfolded octopus unwrap a cellophane-covered bathtub?