"People always try to put a title or a symbol on you. If you work in a bank, you are a banker. For me, they see a co-founder of Facebook"

"Buildings should serve people, not the other way around"

"The opportunity to create a small world between two pieces of cardboard, where time exists yet stands still, where people talk and I tell them what to say, is exciting and rewarding"

"The leader must aim high, see big, judge widely, thus setting himself apart form the ordinary people who debate in narrow confines"

"Ambition is not a vice of little people"

"Unless we have a well-educated people, we're vulnerable on our national security"

"People with many interests live, not only longest, but happiest"

"We have our own history, our own language, our own culture. But our destiny is also tied up with the destinies of other people - history has made us all South Africans"

"I was married to Margaret Joan Howe in 1940. Although not a scientist herself she has contributed more to my work than anyone else by providing a peaceful and happy home"

"Work spares us from three evils: boredom, vice, and need"

"Creating the kind of connections between people that lead to collective civic action, political expression, community dialogue, shared cultural experiences"