Jonathan Zittrain

With the rise of software patents, engineers coding new stuff - whether within a large software company or as kids writing smartphone apps - are exposed to a claim that somewhere a prior patent is being infringed.

I don't know how much thought is behind it, but it seems to me highly effective the way that Facebook will let somebody tag a photo with a friend's name, then others who are a friend of that friend can perhaps immediately see the photo, and the friend, in the meantime, has a chance to wander back and un-tag it.

The Gmail app is definitely the app I use the most. I am always running from meeting to meeting, so it keeps me up-to-date with everything going on. I actually e-mail more often from my iPhone than my laptop, so having a nicely designed e-mail app is really important.

If we live a self-directed, self-motivated, self-centered life, always needing to get our own way, then we're going to be miserable. In fact, many times we believe it's our problems that are making us unhappy when, in reality, it's because we're focused on ourselves!

You make your first album, you make some money, and you feel like you still have to show face, like 'I still go to the projects.' I'm like, why? Your job is to inspire people from your neighborhood to get out. You grew up there. What makes you think it's so cool?