Morally laden terms such as ‘good’ and ‘bad’ have a surprisingly simple biological interpretation. Traits associated with ‘good’ cause groups to function well as units, while traits associated with ‘evil’ favor individuals at the expense of their groups. But as we all know, groups whose members are good as gold toward each other can behave toward other groups in the same way that evil individuals behave toward members of their own group. No one can be trusted on the basis of their job title—not scientists, politicians, priests, or self-righteous intellectuals. Trust requires accountability. Some individuals are accountable on their own, but that’s not good enough at the institutional level. An effective government, religion, or scientific culture must include mechanisms that make everyone accountable.