What I want to do this morning is share with you a couple of stories and talk about a different Africa. Already this morning there were some allusions to the Africa that you hear about all the time: the Africa of HIV/AIDS, the Africa of malaria, the Africa of poverty, the Africa of conflict, and the Africa of disasters. While it is true that those things are going on, there's an Africa that you don't hear about very much. And sometimes I'm puzzled, and I ask myself why. This is the Africa that is changing, that Chris alluded to. This is the Africa of opportunity. This is the Africa where people want to take charge of their own futures and their own destinies.

There is something wrong with our system when I can leave here and make billions of dollars in 10 years while millions of students can’t afford to pay off their loans, let alone start a business. Look, I know a lot of entrepreneurs, and I don’t know a single person who gave up on starting a business because they might not make enough money. But I know lots of people who haven’t pursued dreams because they didn’t have a cushion to fall back on if they failed. We all know we don’t succeed just by having a good idea or working hard. We succeed by being lucky too. If I had to support my family growing up instead of having time to code, if I didn’t know I’d be fine if Facebook didn’t work out, I wouldn’t be standing here today. If we’re honest, we all know how much luck we’ve had. Every generation expands its definition of equality. Previous generations fought for the vote and civil rights. They had the New Deal and Great Society. Now it’s our time to define a new social contract for our generation. We should have a society that measures progress not just by economic metrics like GDP, but by how many of us have a role we find meaningful.

Design is a funny word. Some people think design means how it looks. But of course, if you dig deeper, it's really how it works. The design of the Mac wasn't what it looked like, although that was part of it. Primarily, it was how it worked.

In my opinion, the key to dealing with the future lies in knowing where you are, even if you can't know precisely where you're going. Knowing where you are in a cycle and what that implies for the future is very different from predicting the timing, extent and shape of the next cyclical move.

They encouraged me, the way I do others now, that if you really have something that you like to do, that’s what you probably should do. Despite what everybody says, that you can’t make a living, or that’s not practical, or a thousand reasons why you may not do this or this or this. If that’s what your heart says you should do, chances are that you ought to listen.

I fell in love with the stories by William Beebe, who was an ocean explorer. He discussed what it was like to go down inside a submersible, and peer out of a port hole and see beautiful, luminescent fish, with lights down the side like ocean liners. Bizarre creatures of the sort that you just don’t see walking down the street, or going into the forest, or even looking around in shallow water.