Organizations may be better able to tame optimism than individuals are.

Policy makers, like most people, normally feel that they already know all the psychology and all the sociology they are likely to need for their decisions. I don't think they are right, but that's the way it is.

Nobody would say, 'I'm voting for this guy because he's got the stronger chin,' but that, in fact, is partly what happens.

We don't see very far in the future, we are very focused on one idea at a time, one problem at a time, and all these are incompatible with rationality as economic theory assumes it.

The idea that you can ask one question and it makes the point - well, that wasn't how psychology was done at the time.

Each additional day together is a gift. The end of the day means the end of hostilities, the recognition that the underlying shared values and commitment to the relationship trump the need for one last dig or self-righteous justification.

It was always assumed I would be a professor. I grew up thinking it.