If you're shooting to make the world 10% better, you're in a smartness contest with everyone else in the world - and you're going to lose. There are too many smart people in the world.

If you don't have a tonne of optimism, you're not going to make it... you won't be able to evangelise to everyone else. On the other hand, if you aren't constantly paranoid about what can go wrong and put plans in place, then you're going to get bitten at some point.

The richest people in the world look for and build networks; everyone else looks for work.

So many people are of mixed heritage; everyone is from somewhere else.

Rich people don't pay taxes? Of course they pay taxes - they pay tons in taxes. They pay for everyone else who doesn't pay taxes.

Once you get offstage you're just like everyone else, and everyone else can get into a fight.