The bottom line is down where it belongs – at the bottom. Far above it in importance are the infinite number of events that produce the profit or loss.

When asked if I am pessimistic or optimistic about the future, my answer is always the same: If you look at the science about what is happening on earth and aren’t pessimistic, you don’t understand data. But if you meet the people who are working to restore this earth and the lives of the poor, and you aren’t optimistic, you haven’t got a pulse.

What a great time to be born! What a great time to be alive! Because this generation gets to essentially completely change the world.

I think an old style of addressing environmental problems is ebbing, but the rise of the so-called conservative, political movement in this country is not a trend towards the future but a reaction to this very broad shift that we are undergoing.

We are now heading down a centuries-long path toward increasing the productivity of our natural capital - the resource systems upon which we depend to live - instead of our human capital.

When the planes still swoop down and aerial spray a field in order to kill a predator insect with pesticides, we are in the Dark Ages of commerce.

Don't go to business school.