It's not whether you're right or wrong that's important, but how much money you make when you're right and how much you lose when you're wrong

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.

Proposition 19 already is a winner no matter what happens on election day. The mere fact of its being on the ballot has elevated and legitimized public discourse about marijuana and marijuana policy in ways I could not have imagined a year ago.

These public-private partnerships are very, very dangerous. The most rotten part of the financial system in the US consisted of the government sponsored entities, Fannie Mae and Freddie Mac. They really kicked off this crisis. The state should set the rules and enforce them - but not become involved as a market player.

It is much easier to put existing resources to better use, than to develop resources where they do not exist.

The scope for improvement is infinite, precisely because perfection is unattainable.

I give away something up to $500 million a year throughout the world promoting Open Society. My foundations support people in the country who care about an open society. It's their work that I'm supporting. So it's not me doing it.