The human brain, three pounds of tissue, held more than a hundred billion brain cells and five hundred trillion synaptic connections. It dreamed and wrote music and Einstein’s equations, it created the language and the geometry and engines that probed the stars, and it cradled a mother asleep through a storm while it woke her at the faintest cry from her child. A computer that could handle all of its functions would cover the surface of the earth.
The hundreds of millions of years of evolution from paramecium to man didn’t solve the mystery, thought Kinderman. The mystery was evolution itself. The fundamental tendency of matter was toward a total disorganization, toward a final state of utter randomness from which the universe would never recover. Each moment its connections were becoming unthreaded as it flung itself headlong into the void in a reckless scattering of itself, impatient for the death of its cooling suns. And yet here was evolution, Kinderman marvelled, a hurricane piling up straw into haystacks, bundles of ever-increasing complexity that denied the very nature of their stuff. Evolution was a theorem written on a leaf that was floating against the direction of the river. A Designer was at work. So what else? It’s as plain as can be. When a man hears hoofbeats in Central Park, he shouldn’t be looking around for zebras. (William Peter Blatty, in Legion [pp104-5])
Originally published by Simon & Schuster in 1983, and subsequently turned into what Rinker calls “a more than satisfactory sequel … Exorcist III (which, mercifully, has nothing to do with Exorcist II: The Heretic).” Legion appeared in a Tor paperback edition in 2011 (Tom Doherty Associates, New York).