Ben Carson says he's soft-spoken now -- but he hasn't always been so calm. "As a teenager, I would go after people with rocks, and bricks, and baseball bats, and hammers. And, of course, many people know the story when I was 14 and I tried to stab someone," Carson said Sunday on ABC's "This Week." "You know, fortunately, you know, my life has been changed," he added. "And I'm a very different person now." Carson's comments came after Donald Trump, his leading opponent for the Republican presidential nomination, said at a rally in Miami on Friday that Carson has...