In his new book, Wikipedia co-founder Jimmy Wales writes ”in the early years of the internet, we were right to be bullish about people and the technology. Our capacity for social connection, community and cooperation can deliver amazing things. But the very same human nature can deliver atrocities.”

Wales’s says he wrote this book to help combat a crisis of trust in society that is leading to the rise of authoritarianism. Marketplace’s Nova Safo asked him about the main lessons he learned from building Wikipedia into a highly-relied-upon source of information.