We are by far the most contradictory of all primates. An animal with this much internal conflict has never lived on this earth.
Frans de WaalIf you want to design a successful human society you need to know what kind of animal we are. Are we a social animal or a selfish animal? Do we respond better when we're solitary or living in a group?
Frans de WaalPerhaps it's just me, but I am wary of any persons whose belief system is the only thing standing between them and repulsive behavior.
Frans de WaalWe start out postulating sharp boundaries, such as between humans and apes, or between apes and monkeys, but are in fact dealing with sand castles that lose much of their structure when the sea of knowledge washes over them. They turn into hills, leveled ever more, until we are back to where evolutionary theory always leads us: a gently sloping beach.
Frans de Waal