If you look at the careers of great entrepreneurs and you look at the moment they took their plunge, the plunge is rarely a great financial or material risk, it’s a social risk. At the moment they started their new businesses, everyone around them said ‘you’re an idiot’.

We learn by example and by direct experience because there are real limits to the adequacy of verbal instruction.

What we do as a community, as a society, for each other, matters as much as what we do for ourselves. It sounds a little trite, but there's a powerful amount of truth in that, I think.

I know it sounds hard to believe, but habits laid down by our ancestors persist even after the conditions that created those habits have gone away.

One of the things I think the police have to do is to stop behaving like armies.

So, it's a very, you know - maybe we're wrong in - you know, we go around thinking the innovator is the person who's first to kind of conceive of something. And maybe the innovation process continues down the line to the second and the third and the fourth entrant into a field.

As human beings, we always expect everyday change to happen slowly and steadily, and for there to be some relationship between cause and effect.