Think how weird profit margins are: We've got high unemployment and financial crises - and world record profit margins. People think the American market is very cheap. We don't. The market quite incorrectly gives full credit to today's earnings.

Volatility is a symptom that people have no idea of the underlying value.

We live on a finite planet. We have finite resources, and we're running out of good, arable land.

Think how weird profit margins are: We've got high unemployment and financial crises - and world record profit margins. People think the American market is very cheap. We don't. The market quite incorrectly gives full credit to today's earnings.

I would say that financial markets are very inefficient, and capable of extremes of being completely dysfunctional.

The world is using up its natural resources at an alarming rate, and this has caused a permanent shift in their value. We all need to adjust our behavior to this new environment. It would help if we did it quickly.

Capitalism believes that its remit is exclusively to make maximum short-term profits.