I've debated many economists who claim to specialize in risk and probability: when one takes them slightly outside their narrow focus, but within the discipline of probability, they fall apart, with the disconsolate face of a gym rat in front of a gangster hit man.

The person you are most afraid to contradict is yourself.

Half of the people lie with their lips; the other half with their tears

Your reputation is harmed the most by what you say to defend it.

Work hard, not in grunt work, but in chasing such opportunities and maximizing exposure to them. This makes living in big cities invaluable because you increase the odds of serendipitous encounters-you gain exposure to the envelope of serendipity.

What America does best is produce the ability to accept failure.

The world we live in is vastly different from the world we think we live in.