I'm not a businessman; I'm a business, man.

I'm not a pop star, I'm a performance artist.

With a library you are free, not confined by temporary political climates. It is the most democratic of institutions because no one - but no one at all - can tell you what to read and when and how.

The power of causal reasoning is that it allows us to predict the effects of actions we have never taken.

The only thing that can stop you is you.

You don't know what's in store, but you know what you're here for.