How to make hard choices - Big decisions like these can be agonizingly difficult. But that's because we think about them the wrong way, says philosopher Ruth Chang. She offers a powerful new framework for shaping who we truly are.
Speaking at TED in Rev. Billy Graham marvels at technology's power to improve lives and change the world -- but says the end of evil, suffering and death will come only after the world accepts Christ. A legendary talk from TED's archives.