sentences:  "The extraordinary thing about Frank is that he wrote a great book in the early 1950s and was still going strong 50 years later.He had a deep perspective that came from studying history and business and politics and was able to communicate it well to the public.I don't know anyone with the same combination of energy, upbeat attitude and humor [that] Frank had," commented Prof. Ezra Vogel of Harvard University, his long time friend.