Out of Our Minds

is the title of an excellent book by Ken Robinson. As usual I'm going to quote from a few pages:
People are not creative in general but in doing something concrete.
Spontaneity sometimes has to be carefully planned.
Creativity is not just a matter of letting go: it involves hanging on.
Creativity is as much a process of finding problems as solving them.
Trying to put some experiences into words is like stringing clothes on a washing line when in practice they are worn one inside the other.
Creativity is a process not an event.
We classify at our peril.
Creativity is incremental.
Creativity relies on the flow of ideas.