itself simply nonentity having no property except a capacity for being occupied, they proceeded to fill it several times over with ethers designed to provide electric, magnetic, and gravitational forces, and to account for the propagation of light.” (pp. 98­9) Perhaps no more striking evidence of the merely visual and uniform character of the space was given than in the famous phrase of Pascal: “Le silence éternel des espaces infinis m’effraie.” Some meditation on why silent space should be so terrifying yields much insight into the cultural revolution going on in human sensibilities by the visual stress of the printed book. But the absurdity of speaking of space as a neutral container will never trouble a culture which has separated its visual awareness from the other senses. Yet, says Whittaker (p.