Our civilization will, of course, be "playing God" in an ultimate sense of the phrase: evolving a greater intelligence than currently exists on earth. It behooves us to be a considerate creator, wise to the world and its fragile nature, sensitive to the needs for stable footings that will prevent backsliding -- and keep that house of cards we call civilization from collapsing.
William H. Calvin, How Brains Think: Evolving Intelligence, Then And Now
civilization, intelligence