I am deeply saddened to receive news of John's passing. I was one of his graduate students and have much to thank him for his mentoring, support and teaching. I can only hope to I live up to his methodical standards for research. It has proved invaluable for me to keep a math idea journal since my doctorate in '87! Functional analysis has helped me connect the dots in many disciplines. Thank you John! In Aiki spirit, Gary Nan Tie