Judge the goodness of a book by the energy of the punches it has given you. I believe the greatest characteristic of genius, is, above all, force.
I never had the exposure to techniques and so forth that children have today with art workshops, but I always had crayons and pencils and still have work going right back to when I was five or six years old.
Believe me - I've done very good stuff and very crazy stuff, and I don't regret the crazy stuff.