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 was a kind of hyper-intense person in my twenties and very impatient.

You can go overboard in how quickly you might expect new technologies to transform people's lives. But I very much believe the way software is used, the way information gets distributed, will be dramatically different within 10 years. There is fire to go with all this smoke.

The most meaningful way to differentiate your company from your competitors, the best way to put distance between you and the crowd is to do an outstanding job with information. How you gather, manage and use information will determine whether you win or lose.

The early personal computers were not very powerful so the idea of feeding their program into a small amount of memory requires immense skill.

Lectures should go from being like the family singing around the piano to high-quality concerts.

Depending on how quickly you get ocean rise, you have people who live in river deltas [at risk].