Frans de Waal introduced the world to Big Mama, Yeroen, Luit and the other members of a group of chimpanzees at Arnhem Zoo in the Netherlands. His 1982 book, The Politics of Chimpanzees, was a revolutionary narrative.
De Waal showed us that the phrase “primates are family” is not a metaphor, but an affirmation of reality: we are relatives. He based his philosophical approach to humanity on the science of social relations within and between species.