I did stand-up comedy for 18 years. Ten of those years were spent learning, four years were spent refining, and four years were spent in wild success. I was seeking comic originality, and fame fell on me as a byproduct. The course was more plodding than heroic.

The banjo is truly an American instrument, and it captures something about our past.

I just believe that the interesting time in a career is pre-success, what shaped things, how did you get to this point.

I never thought about success. I always thought about doing the job at hand. My goal was getting through the show that night.

The art and science of asking questions is the source of all knowledge.

I became a member of the faculty at Northwestern University in 1965 but did not complete my thesis until two years later at a graduate ceremony at which Carnegie Institute of Technology became Carnegie-Mellon University. At Northwestern, I was mentored by the 'three Bobs:' Robert Eisner, Robert Strotz and Robert Clower.

I really have this desire to make it known that the Internet exists and YouTubers are important. And not only are YouTubers important, our followings are incredible.

Science is a wonderful thing if one does not have to earn one's living at it.