“Nobody smart knows what they want to do until they get into their twenties or thirties.”

“Until you're about the age of twenty you read everything, and you like it simply because you are reading it. then between twenty and thirty you pick up what you want, and you read the best, you read all the great works.after that you sit and wait for them to be written. But you know the least know, the least famous writers, they are the better ones.”

“Customers rarely know what they want until they don't get it.”

“The generality of mankind is lazy. What distinguishes men of genuine achievement from the rest of us is not so much their intellectual powers and aptitudes as their curiosity, their energy, their fullest use of their potentialities. Nobody really knows how smart or talented he is until he finds the incentives to use himself to the fullest. God has given us more than we know what to do with.”

“I know, it looks pure and beautiful to you now, at your great old age of twenty-two. But do you know what it means? Thirty years of a lost cause, that sounds beautiful, doesn't it? But do you know how many days there are in thirty years? Do you know what happens in those days?... I want you to know what's in store for you. There will be days when you'll look at your hands and you'll want to take something and smash every bone in them, because they'll be taunting you with what they could do, if you found a chance for them to do it, and you can't find that chance, and you can't bear your living body because it has failed those hands somewhere.”

“A fool will study for twenty or thirty years and learn how to do something, but a wise man will study for twenty or thirty minutes and become an expert. In this world, it isn't ability that counts, but authority.”