Strategically, a major function of the CEO is to look for bad news and encourage the organization to respond to it. Employees must be encouraged to share bad news as much as good news.

I'm an investor in a number of biotech companies, partly because of my incredible enthusiasm for the great innovations they will bring.

The huge turnout for Live 8 here and around the world proves that thanks to the leadership from people like Tony Blair and Gordon Brown the world is beginning to demand more action on global health and poverty.

I don't think I would have spent time learning about the immune system if understanding vaccines weren't something I considered very important.

It's the knowledge derived from information that gives you a competitive edge.

The most important work I got a chance to be involved in, no matter what I do, is the personal computer... I even knew not to get married until later because I was so obsessed with it. That's my life's work.

Technology must be implemented as part of a thoughtful, holistic approach to education transformation that includes teacher training, relevant curricula, parental involvement, and programs for children that fill unmet needs for basics like nutrition and health care.