[VadeRetro]

Now we know by how much we don't know that we don't know.

People always feel that they have a handle on something if they can stick numbers to it. It's a control thing.

[PatrickHenry]

First you say you do, and then you don't,
And then you say you will, and then you won't;
You're undecided now, so what are you gon - na do?

Now you want to play, and then it's no,
And when you say you'll stay, that's when you go --
You're undecided now, so what are you gon - na do?

[Doctor Stochastic]

Or from P.D.Q.Bach's "Iphigenia in Brooklyn": Who knows what it means to be running; only he who is running, running, knows. Run, running knows....