Even if such wisdom had indeed become common knowledge (which I doubt, but don't have time to draft a proper response), just being exposed to a piece of information doesn't do much for the individual. As I said above the goal isn't to stack up books and be briefly exposed to many ideas, but rather to have some ideas become a part of you.

Or, put more pithily, it is what you read when you don't have to that determines what you'll be when you can't help it.