“As an administrator for 15 years, I still tried to do science and it was difficult because being a dean, every day there is a problem. Every day you have to solve some personal issues, so it’s difficult to concentrate and what I would do was, whenever there was an opportunity to go to a conference away from the university, particularly in a different country, I would sit in the conference room listening to these lectures. You know how it is with meetings, maybe 10% of the speakers are exciting and interesting. What I found is even when I was not listening because I was in this atmosphere of people talking about physics, my mind was set free and would just start percolating. And all of a sudden ideas would come completely unrelated to what the speaker was talking about, except that they were scientific ideas. And I would jot them down and I found ...