"I think all the scientists that I've worked with have been pretty remarkable people in terms of their scientific ability. They have not always been the most gentle people, kindliest people in dealing with their colleagues or their staffs, and so on. And some of them, I guess, have gotten to the top of the ladder by stepping over bodies. But you find that in any field. There are rascals in every profession, and scientist are no different in this respect of fighting their way to the top and even using their claws if necessary."