Warren Wagar, A Short History of the Future, page 244:

…sharp witted, yet outgoing and cooperative, the young members of Homo Sapiens altior fashioned a new model of human behavior ideally suited for life in autonomous communities. They were less inclined than the old human type to take advantage of others and too intelligent to be taken advantage of themselves. Their extraordinary powers of mind and heart were another form of wealth, shielding them, as ample personal incomes and education helped to shield everyone, from the age-old tendency of most of Homo sapiens to fall victim to predators.