Discipline makes hard men. Every hard man is capable of being a killer. But every killer is not capable of being a hard man. They can't endure that much. It's all about the endurance. That's why they become killers. Because they can't endure the pain. They need to kill the pain to stop it.
Mike TysonI always had a lot of responsibilities. I just didn't take them. I just decided to take care of my responsibilities, live up to them. That's a pretty interesting job. It's harder than being heavyweight champion of the world.
Mike Tyson