Condoms aren't completely safe. A friend of mine was wearing one and got hit by a bus.

Any individual decisions can be badly thought through, and yet be successful, or exceedingly well thought through, but be unsuccessful, because the recognized possibility of failure in fact occurs. But over time, more thoughtful decision-making will lead to better overall results, and more thoughtful decision-making can be encouraged by evaluating decisions on how well they were made rather than on outcome.

The only certainty is that there is no certainty.

First, the only certainty is that there is no certainty. Second, every decision, as a consequence, is a matter of weighing probabilities. Third, despite uncertainty we must decide and we must act. And lastly, we need to judge decisions not only on the results, but on how they were made.

In terms of myself, I said from the very beginning that I wanted to work in the management of Citigroup and I didn't want to be a CEO, ... That's not what I want to do with myself at the moment.

I think it could have real changing effects on the financial markets of our country, it could cause investors to think more about real rates of return and that in turn could spawn new kinds of products.

A strong currency means that American consumers and businesses can buy imported goods and services more cheaply and that inflation and interest rates will be lower, ... It also puts pressure on American industry to increase productivity and competitiveness. These benefits can feed on themselves as foreign capital flows in more readily because of greater confidence in our currency. A weak dollar would have the contrary effects.