Von DŠniken on Easter Island
Even if people with lively imaginations have tried to picture the Egyptian pyramids being built by a vast army of workers using the Ňheave-hoÓ method, a similar method would have been impossible on Easter Island for lack of manpower.  Even 2,000 men, working day and night, would not be nearly enough to carve these colossal figures out of the steel-hard volcanic stone with rudimentary tools and at least a part of the population must have tilled the barren fields, woven cloth and made ropes. (Chariots, 110)