Our managers need to have a strong integration of managerial skills and technical understanding. One cannot substitute for the other.

To have strongly integrated managers who have a deep understanding of technology is a rare and difficult combination to build. You have to invest a lot in selecting and training these people.

You have got the right strategy, the right geography; you have got the right customers. You need to prioritise them better; we need to grow them better, mind them better. We need to give more value to them, and we need to execute a lot of areas in the organisation where we are not executing.

You need a commitment which is long term and a commitment to leadership, because that's the only way you build excellence.

I say always follow your passion, no matter what, because even if it's not the same financial success, it'll lead you to the money that'll make you the happiest.

The implications are clear: Facebook wants to build an Internet where watching films, listening to music, reading books and even browsing is done not just openly but socially and collaboratively.

This is our commitment to users and the people who use our service, is that Facebook's a free service. It's free now. It will always be free. We make money through having advertisements and things like that.

Of course, bankers were always interested in making money. But when bankers had clients, they bore some responsibility for the clients' welfare.