Read the following article and answer the question. Article: I was born in Brooklyn. My father was a small-business man and we never had much money. He supported the family, moved us to Merrick on Long Island, when I was 11. He just recently died at age 96. He was still driving and playing golf right to the end. He was the only guy I knew who at age 90 could shoot under his age. I guess that taught me something about perseverance. I went to the University of Michigan as an engineering student in 1960. I was standing outside the student union building when Senator John F. Kennedy made a campaign speech that essentially announced his plan for the Peace Corps. He talked about how students could provide service for the country. It was an important moment for me. After I graduated, I worked as a computer programmer for I.B.M. for two years. By then, the Vietnam War was in full swing and the draft had accelerated. I didn't agree with the war and was interested in finding alternatives. I.B.M. applied for a delay for me twice but the application failed. I went to work at M.I.T.'s Instrumentation Labs on a project designed to create a rescue vehicle for lost submarines . I thought this job would keep me out of the draft, but M.I.T. hadn't put in the proper paperwork and I got called in for my physical. The day before my physical, I broke my ankle playing tennis and, of course, my draft board didn't believe a word of it. I had to provide X-rays. I had tears in my eyes from the pain, but a smile on my face. I started John Snow Inc. in 1978 (Dr. Snow is considered the father of modern epidemiology because he traced the source of a cholera epidemic in the 1850s). We had a very clear vision of what we would be. It would not be about making the most money but having the most impact. My goal was to attract talented people who had that passion to focus on primary care, women's health, child health, and to do great work. I also run a nonprofit called World Education, which focuses on literacy. What motivates me is going to the field, either in the United States or overseas, and... Question: What kept the author trying to achieve his goal? Answer:
Answer:
His father's keeping living an active life to the end.