To be someone's best friend requires a minimum investment of time. More than that, though, it takes emotional energy. Caring about someone deeply is exhausting.

Trump is an innovator who has shown how out of step the political establishment was. Which I think, probably, in the long term will be healthy. We have to figure out how to reinvigorate our political institutions and he's demonstrating to us the urgency of that task.

Sometimes [genius] is just the thing that emerges after twenty years of working at your kitchen table.

There is a simple way to package information that, under the right circumstances, can make it irresistible. All you have to do is find it.

If a window is broken and left unrepaired, people walking by will conclude that no one cares and no one is in charge. Soon, more windows will be broken, and the sense of anarchy will spread from the building to the street on which it faces, sending a signal that anything goes.

We prematurely write off people as failures. We are too much in awe of those who succeed and far too dismissive of those who fail.

Poverty is not deprivation, it is isolation.