Of course, the most important factor of all for long life is a good family. When a person goes home with the wife or the kids giving him endless headaches, then it's hard for that person to enjoy a long life. I am very fortunate, because my wife Elizabeth and my obedient children are very good; they have given me happiness.

The most important factors for a long life, I think, are partly in the genes; number two is lifestyle, which includes healthy diet and regular exercise. I walk, run and swim every day. However, I think too much exercise is also unhealthy because of over-stress; sometimes people who exercise too many hours per day die early.