Bob Cedergren passed away on October 14th, his wife Henrietta by his side. For more than seven years, he had fought his cancer tenaciously and optimistically, willingly accepting the rigors of each successive treatment, savoring any respite it offered, however brief, and defying all medical prognostics. He was lucid to the end, his sense of humor intact, directing his laboratory, receiving a stream of visitors, and sharing life as fully as he could with Henrietta, his children Eric and Nellie, and his many friends. In the last years of his life, he transmitted precious lessons to all those around him. He had reached near-perfect serenity and wisdom, and in the most difficult moments it was Bob that supported us with his own inner strength.