Don't let yourself be lulled into inaction.

Making sure all our students get a great education, find a career that's fulfilling and rewarding, and have a chance to live out their dreams ... wouldn't just make us a more successful country - it would also make us a more fair and just one.

Don't wallow in failure. Instead, learn from it.

In programming when you're making a change you have to know all the affected places, and you have to be able to model in your head what the performance impact will be.

When I was in college, for the games of that era, I was as hard core as anyone was. I wouldn't say I outgrew it, but you always have to have a finite number of addictions.

I try to make time for reading each night. In addition to the usual newspapers and magazines, I make it a priority to read at least one newsweekly from cover to cover. If I were to read what intrigues me- say, the science and business sections - then I would finish the magazine the same person I was when I started. So I read it all.

The billion people who wake up every day trying to figure out if they have enough food to eat won't be at Davos.