I'm old enough to have friends and contemporaries who have long since retired, and that's their prerogative - enough is enough; it doesn't mean a thing to me. But I haven't got any money, so, you know, I just keep on working.
“I am not thinking that because people say I am great that I really am great. I am just doing a job, just like everybody else. The only difference is that a lot more people see what I do.”
“The clash between Popper and Kuhn is not about a mere technical point in epistemology.”