Whenever you’re making a movie, especially when you’re writing, you always have self-doubts. I did the first location shooting in Tunisia.

Don't be scared of the ‘what ifs,’ because the truth is, the only failure is not trying. That's the only way you can fail. Trying and having it not work out isn't failure.

But in 2007, the music stopped. We had lost sight of our shared purpose and our guiding principles, in which growth and success began to cover up mistakes and a disease set into Starbucks. That disease, hubris. We lost our way and believe it or not, we almost lost the entire company.

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.

There were lots of times, especially in the early days, that were very, very difficult. I think the most difficult experience I had was in 1990 when Oracle had its only loss quarter in history. We’d been in business for 20 years, and after 20 years we lost money one quarter. We had a very difficult time. We had virtually doubled our sales every year for ten years. Nine out of ten years, ten out of eleven years. It was really quite an amazing run. We were the fastest growing company in history