The viruses that attack democracies are spreading alongside the pandemic. They are familiar, but have never been so prominent before: the breakup of social cohesiveness, dwindling responsibility to the idea of one political community, derision and alienation from politics, tribalism and sectarianism, populism and civil strife, and the immense power wielded by interest-groups and political lobbies. There is a way, however, to get rid of all that with one stroke: Go back and listen to the inventors of democracy.