What does the fox and the hedgehog mean?

The distinction comes from a saying of the ancient Greek poet Archilochus: "The fox knows many things, but the hedgehog knows one big thing." Hedgehogs have a single grand idea that they apply to everything, while foxes come up with a new idea for every situation.

I am definitely a fox. The problem is that, yes, I know many things, but most of what I know ain't worth telling. My new ideas dissipate quickly.