They admired his thoroughness, his tirelessness—the way he threw himself into every aspect of politics, into everything he did, with an enthusiasm and effort that seemed limitless. He already possessed an amazing store of knowledge about individual Congressmen and their districts through his capacity for absorbing and retaining information. “He was a pack rat for information,” Fortas says. “And he was very, very intelligent. He never forgot anything. He would work harder than anyone else. I have never known a man who had such a capacity for detail.”