The Wizard of Oz
Scarecrow: But some people without brains do an awful lot of talking… don’t they?
Wizard of Oz: As for you, my galvanized friend, you want a heart. You don’t know how lucky you are not to have one. Hearts will never be practical until they can be made unbreakable.
Tin Woodsman: But I still want one.
Wizard of Oz: Why, anybody can have a brain. That’s a very mediocre commodity. Every pusillanimous creature that crawls on the Earth or slinks through slimy seas has a brain. Back where I come from, we have universities, seats of great learning, where men go to become great thinkers. And when they come out, they think deep thoughts and with no more brains than you have. But they have one thing you haven’t got: a diploma.
Scarecrow: The sum of the square roots of any two sides of an isosceles triangle is equal to the square root of the remaining side. Oh joy! Rapture! I got a brain! How can I ever thank you enough?
Wizard of Oz: You can’t.