What advice would you give your twenty-year-old self, and what should they ignore?

So I wish to you—I have no more time, so I have just one wish for you—the good luck to be somewhere where you are free to maintain the kind of integrity I have described, and where you do not feel forced by a need to maintain your position in the organization, or financial support, or so on, to lose your integrity. May you have that freedom. May I also give you one last bit of advice: Never say that you'll give a talk unless you know clearly what you're going to talk about and more or less what you're going to say.

The most important piece of advice that I could give them is to take advantage of the tremendous reservoir of knowledge that’s out there today. Spend some time learning how the world has evolved. There are a lot of good lessons in history, and other peoples’ experiences in the past, that could be exactly the solution to the problem you’re looking for.

Your time is limited, so don't waste it living someone else's life. Don't be trapped by dogma — which is living with the results of other people's thinking. Don't let the noise of others' opinions drown out your own inner voice. And most important, have the courage to follow your heart and intuition. They somehow already know what you truly want to become. Everything else is secondary.

I think a lot of people, when they’re really young, and in their 20s, they are on their own quest for personal efficacy. And I understand that. ... But the sooner that people can discover that it’s really about building teams, and not about personal efficacy, I think the better — the more quickly — we can move forward. I believe that.

One day, I spoke to him about my sense of shame. He looked me in the eyes and told me that brewing was a science; it was not about getting drunk. He did not stop there. He said: 'Do not make judgment on things, people, and issues with half information.' He said there is truth in everything you see around. So, look for everything in its entirety. That was a game-changing moment for me.

Never give up your passion for learning. And zoom out of your field before you zoom in. Some of my very best business insights have come from reading around subjects. They have come from approaching questions at a strange angle, from thinking about them from a different point of view. A lot of the knowledge that has really given me an edge in business has come from history, psychology, even chemistry. Connecting seemingly unconnected dots is what has served me well.

You have to change from doubter to believer.