I don't want to understand Facebook.

How do you compete against a true fanatic? You can only try to build the best possible moat and continuously attempt to widen it.

I think it is undeniably true that the human brain must work in models. The trick is to have your brain work better than the other person's brain because it understands the most fundamental models- ones that will do most work per unit.

Intense interest in any subject is indispensable if you're really going to excel in it.

A rough rule in life is that an organization foolish in one way in dealing with a complex system is all too likely to be foolish in another.

There has never been a master plan. Anyone who wanted to do it, we fired because it takes on a life of its own and doesn't cover new reality. We want people taking into account new information.

Everybody engaged in complex work needs colleagues. Just the discipline of having to put your thoughts in order with somebody else is a very useful thing.”