I was very saddened to learn of Peter’s passing. He was a wonderful person as well as a renowned expert and educator. He was always modest and approachable and very generous with his time and expertise. No question was ever too trivial for him to consider meticulously and to give a sensible and helpful response. It was a privilege to have known him and to have worked alongside him. He will be greatly missed. My thoughts are with his family and friends at this difficult time.