I met Leo as the dean of the former University College. He presided over my hiring and helped me get tenure later. I always felt that, whatever subsequent contribution I’ve been able to make I owe to the other historians in the college, particular Leo. I think we both recognized very quickly that we shared a sense of what we do in a deeper, vocational sense, and we became colleagues and friends. He was the best, most humane, well-intentioned and fundamentally decent person I had ever encountered in such a position. Because of our schedules, we kept in touch only through episodic emails, and I deeply regret that we did not keep in touch more closely, because I thought so much of him. He will be sorely missed.