I think; therefore I'm a library

Shameless Carpalattery, themilum.

I thought you were above that.

Hey, I've got a variation on your game.

Instead of linking a notable's thinking with something only the notable would find credible, why not invite people to identify a notable by their actual characteristics.

For instance, who is this?

I think --- hard but not deep.

I think --- often but not much.

I think --- more of my thinking than anyone else does.

Extra credit if you have the courage to say who it is.