" Our northern brethren buried their dead, were skilled toolmakers, kept fires going, and took care of the infirm just like early humans. The fossil record shows survival into adulthood of individuals afflicted with dwarfism, paralysis of the limbs, or the inability to chew. Going by exotic names such as Shanidar I, Romito 2, the Windover Boy, and the Old Man of La Chapelle-aux-Saints, our ancestors supported individuals who contributed little to society. Survival of the weak, the handicapped, the mentally retarded, and others who posed a burden is seen by paleontologists as a milestone in the evolution of compassion. This communitarian heritage is crucial in relation to this book’s theme, since it suggests that morality predates current civilizations and religions by at least a hundred millennia. "

― Frans de Waal , The Bonobo and the Atheist: In Search of Humanism Among the Primates