But one of the most impressive things I can say about him is that he has never been too busy for his kids. When we were growing up, he always had a book in his hand—but whenever we wandered out and said, “Hey Dad . . .” he would always immediately set his book down and give us his full attention. When we now crash his evenings on a regular basis for a chat, he always sets aside whatever it is he’s working on and will pick it up again after we leave.