You must never feel badly about making mistakes ... as long as you take the trouble to learn from them. For you often learn more by being wrong for the right reasons than you do by being right for the wrong reasons.
Norton JusterI 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
Norton Juster