I haven't seen this one in the archive. If this is a double post, I apologize.
EDIT! I really should have posted a list of all the folks depicted, so allow me to answer.
Top: Confucius, Jesus, Proudhun
Middle: Kant, Hume, Nietzche
Bottom: Macchiavelli, Rand, de Sade
Funny enough, de Sade's portrait was one of the ones I recognized.