About the common stuff about entrepreneurship, I'd read too much from books and talks. So, I'm going to share my own opinion. Something special, I think.
At the beginning of the talk, he told that he's really intense because it is his first time to present in front of a crowd of academics. He suggested the students should complete the academic study, and don't give up.
If I had the chance to take all the wealth and so called fame and glory that I have right now, and buy back 15 years of life, but keep the knowledge that I have now, and relive the physique I had 15 years ago and trade places with you right now, I would make that trade in a heartbeat.