The assumption of perfect knowledge is very far from reality ... a lot of the evil in the world is actually not intentional.

I put forward a pretty general theory that financial markets are intrinsically unstable. That we really have a false picture when we think about markets tending towards equilibrium.

Well, you know, I was a human being before I became a businessman.

Making an investment decision is like formulating a scientific hypothesis and submitting it to a practical test.

The more comprehensive and convincing a debt reduction program is, the less likely it is to fail. And remember, just as Germany is grateful to America for the Marshall Plan, Italy would be grateful to Germany for helping it lower its refinancing costs.

Investors operate with limited funds and intelligence, they do not need to know everything. As long as they understand something better than others, they have an edge.

The sovereignty of states must be subordinated to international law and international institutions.