At Facebook, we're inspired by technologies that have revolutionized how people spread and consume information. We often talk about inventions like the printing press and the television - by simply making communication more efficient, they led to a complete transformation of many important parts of society. They gave more people a voice. They encouraged progress. They changed the way society was organized. They brought us closer together.

When grand plans for scientific and defence technologies are made, do the people in power think about the sacrifices the people in the laboratories and fields have to make?

I was born in Africa. I came to California because it's really where new technologies can be brought to fruition, and I don't see a viable competitor.

Content is not just king, it is the emperor of all things electronic.

Great journalism will always attract readers. The words, pictures and graphics that are the stuff of journalism have to be brilliantly packaged; they must feed the mind and move the heart.

Journalists should think of themselves as outside the Establishment, and owners can't be too worried about what they're told at their country clubs.