What drives human progress? Ecologists point to geography and climate. Sociologists invoke wars and class. Economists follow the money. But none of these accounts explains why innovation and human thriving occurs in some eras and stalls in others—often under identical material conditions. The missing variable, as renowned psychologist Martin Seligman argues in Agency, is psychological. Join us for a virtual book forum featuring Cato psychologist Adam Omary and historian of progress Johan Norberg.