If you're in your early 20s and you're hanging out with a bunch of other people in their early 20s, nobody has a sense of the kinds of problems that real 'workers' run into every day. They're running into a completely different set of problems like 'what's the party going on right now that I should be going to?

I think people are always able to achieve more than they think they can. While that’s cliche, I don’t know if managers think about that enough. You have to set your sights extremely high.

I believe there's plenty of market for each; we're talking about an ecosystem that is going to support billions of devices, so a competitive landscape is good for consumers, developers, and the platforms alike. Apple brings a smooth elegance to its devices and platform, with the best marketplace experience to boot. Google brings a higher volume of devices as well as a more diverse ecosystem to interact with. The real story here is that Microsoft is nowhere to be seen, ending a two-decade monopoly and creating biggest opportunity for software startups probably ever.

Innovation is hard because solving problems people didn't know they had & building something no one needs look identical at first.

Sometimes things are the way they are and can't be changed, other times it's because no one ever tried. Your job is to find the latter.

Always look for these changing technology factors- any market that has a significant change in the underlying raw materials ...or enabling factors, is an environment that is about to change in a very significant way.

My downtime tends to resemble my uptime. Weekends are workdays, but toned down. Over the whole weekend, I may have five meetings, as opposed to six on a weekday. I used to play piano for 30 minutes at night, but I had to pull that out of my schedule. I don't have time for nonwork stuff.