On his 90th birthday, he recalled that perhaps his greatest contributions to Taiwan were in appealing to President Chiang Kai-shek not to prohibit citizens from studying abroad, and opposing Taiwan's development of nuclear weapons. "It was the right thing for young people of this generation and the next."
他曾在九十壽誕時回憶，當年勸阻蔣介石總統不要禁止留學政策，以及後來反對台灣發展核子武器，應是他對台灣最大的貢獻，「對得起這一代與下一代的年輕人」。