Comment by eigenvalue

Without knowing the cause of death, I think it's premature to say that he worked himself to death. It was probably some kind of cancer that probably would have happened anyway. The bigger question I think is, if he could do it over again, would he have tried to spend more of his short time on earth with his family and relaxing/enjoying life rather than working? And even that is not so clear cut-- it may well be that what gave him the most satisfaction in life was the feeling of accomplishment from doing an important job well.