Typography as the first mechanization of a handicraft is itself the perfect instance not of a new knowledge, but of applied knowledge. (p. 171) - Marshall McLuhan

Rationality or consciousness is itself a ratio or proportion among the sensuous components of experience, and is not something added to such sense experience. Subrational beings have no means of achieving such a ratio or proportion in their sense lives but are wired for fixed wave lengths, as it were, having infallibility in their own area of experience. Consciousness, complex and subtle, can be impaired or ended by a mere stepping-up or dimming-down of any one sense intensity, which is the procedure in hypnosis. And the intensification of one sense by a new medium can hypnotize an entire community.

The literate man is a sucker for propaganda...You cannot propagandize a native. You can sell him rum and trinkets, but you cannot sell him ideas.

Typography is not only a technology but is in itself a natural resource or staple, like cotton or timber or radio; and, like any staple, it shapes not only private sense ratios but also patterns of communal interdependence. (p. 186)