I am deeply moved reading these comments about Prof. Shu Geng, who lived a remarkable life. I send my condolences to Elvin, Joy and Carolyn. Shu may have been the hardest working, most rigorous and visionary person I have ever met. Growing up with his son Elvin, I remember being astounded that he would go back to his office to do research after dinner, nearly every night, sometimes on a red moped bought during the energy crisis of the late 1970s. By the time Elvin and I were in college, Shu had transcended disciplines, examining bold and difficult scientific questions, for which he was widely recognized. Years later, I chatted with him at Elvin's wedding, and he was visiting from China, where he was launching ambitious new initiatives. I would often tell friends overseas about the incredible arc of his life story, tales of his scrappy resilience growing up in Taiwan, his full life in California, and then the chapter in China. He was incredibly energetic, interested in big ideas, and, in my mind, unflappable. I am saddened by his loss. May he rest in peace.