Nothing. I've read a bunch of them looking for some kind of enlightenment. I can't say any of them were actually worth the time invested. I expect to be downvoted, but this is truly what I feel. Read a couple of these books just to confirm to yourself they're a waste, and go lead your own life.
Reading, after a certain age, diverts the mind too much from its creative pursuits. Any man who reads too much and uses his own brain too little falls into lazy habits of thinking.
