I think PCs are going to continue to shift in form factor. The real question is: What's a PC?

We'll get a chance to go through this [Apple versus Microsoft debate] again in phones and music players. There's no chance that the iPhone is going to get any significant market share. No chance. It's a $500 subsidized item. They may make a lot of money. But if you actually take a look at the 1.3 billion phones that get sold, I'd prefer to have our software in 60% or 70% or 80% of them, than I would to have 2% or 3%, which is what Apple might get.

I think the biggest mistake most people make when they pick their first job is they don't worry enough about whether they'll love the work, and they worry more about whether it's good experience

The company [Microsoft] really has to chart a direction in mobile devices. Because if you're going to be mobile-first, cloud-first you really do need to have a sense of what you're doing in mobile devices. I had put the company on a path. The board as I was leaving took the company on a path by buying Nokia, they kind of went ahead with that after I told them I was going to go. The company, between me and the board, had taken that sort of view. Satya, he's certainly changed that. He needs to have a clear path forward. But I'm sure he'll get there.

No. 1 thing is that life is just not as interrupt-driven as when you're running a company.

I've got my kids brainwashed: You don't use Google, and you don't use an iPod.

Ultimately progress is measured sort of through the eyes of users.