I am a great fan of Ken Robinson and his work on creativity.
Here is one of his quotes: ‘If you are not prepared to be wrong, you will not come up with anything original.’
See here the intro to his website.
I think we have a tendency, as educators, to do all we can to prevent the students being wrong or making mistakes. Not only do they not develop their creative side but we miss out on the valuable learning that can occur.
He has written a great book called The Element which I recommend for all educators.
I met a teacher on the Big Picture study tour who encouraged me to hang in there when there was a crisis happening in class or with a student and look for the learning that can occur. I think this is good advice, especially in regard to what Ken is saying.