« Civilization Is Multicellularity »

"The psychological group is a provisional being formed of heterogeneous elements, which for a moment are combined, exactly as the cells which constitute a living body form by their reunion a new being which displays characteristics very different from those possessed by each of the cells singly." (Le Bon).

"Biologically gregariousness is an analogy to multicellularity and as it were a continuation of it. It is a further manifestation of the inclination, which proceeds from the libido, and which is felt by all beings of the same kind, to combine in more and more comprehensive units." (Freud)

So here you have it: civilization is (reducible to) multicellularity.