" Belief in humankind's sinful nature also provides a tidy explanation for the existence of evil. When confronted with hatred or selfishness, you can tell yourself, 'Oh, well, that's just human nature.' But if you believe that people are essentially good, you have to question why evil exists at all. It implies that engagement and resistance are worthwhile, and it imposes an obligation to act. "
― Rutger Bregman , Humankind: A Hopeful History