So I find that teaching and the students keep life going, and I would never accept any position in which somebody has invented a happy solution for me where I don’t have to teach.  Never.

My job was basically to be a delivery boy for all kinds of things, but they also — because I was at Georgetown and studying international affairs, I was assigned to read six newspapers a day and clip the most relevant articles. This is the technology we used. You couldn’t scan articles. There was no “online.” There was nothing, right? So I would read the newspapers, clip the articles I thought they ought to read, put them on a routing slip, which had on it the names of the senior staff of the committee and all the senators who were committee members. And I would send it to the senior staff, and they would decide whether to send any of them on, but I don’t think I’d have won a Rhodes Scholarship if I hadn’t been a clerk on the Foreign Relations Committee. Nobody else I was competing with read six newspapers a day, and they actually paid me good money to read The Washington Post, The New York Times, The Washington Star, which existed then, The Baltimore Sun , The St. Louis Post Dispatch , and then we alternated — and — oh, and The Wall Street Journal . We read them every day. Those were the six papers we read. I did, and then that’s what the senators got.

We need to have mentors. I think I've always been pretty shameless about seeking out people much smarter and much more experienced than me from the very beginning. Michael Seibel and other people. And the more successful I got, the more leaders I started seeking out, whether it was investors, or Sheryl Sandberg at Facebook, or I got the opportunity to spend time with Warren Buffett and he became a close mentor of mine.

Diversifying means going abroad…Be in another culture, speak a different language, see how other people think. Leave and then come back.

They have a lot of extreme physics going on inside them and scientists use them to test theories of relativity on a cosmic scale. Einstein’s theories are checking out pretty well so far.

My contemporaries were more upset about the Nobel than I was not to be recognised. One of them labelled it the 'No-Bell' prize! But it was fine by me. There's no Nobel Prize in astronomy and I was really proud that it was my stars that had convinced the prize committee that there was good physics in astrophysics.

I was very, very thorough, making sure I really understood how that telescope worked, and that it was working properly. I was quite convinced that I wasn't clever enough to be in Cambridge and would be thrown out at some stage. My policy was to work as hard as I could so that I'd know I'd done my best. We now label this as impostor syndrome, but we didn't recognise, and certainly didn't name it, back then.

It looked like an agricultural frame, something you might grow peas up – a lot of wires and cables strung from posts over a space the size of 57 tennis courts. It was actually built to study radio emission from quasars. I built the prototype and then six of us took two years to build the real thing.

Tony was cautious. He suspected I’d wired the radio telescope up wrong. So we checked on another radio telescope on the site. The thing was pulsing nicely on mine but as we stood by the pen recorder of this other telescope, nothing happened. It was a horrible moment. And suddenly there it was, five minutes later because we had miscalculated when the telescope would see it. If we’d miscalculated by 25 minutes, we’d have all gone home and the story would be different.

I was really proud that it was my stars that had convinced the prize committee that there was good physics in astrophysics.