David Gergen, a veteran of Washington politics and an adviser to four presidents in a career spanning decades in government, academia and media, has died. He was 83.

David Gergen, 83, a political insider who advised four former US presidents, died in Massachusetts on July 10.

He held communications and troubleshooting jobs under Presidents Nixon, Ford, Reagan and Clinton and became a leading TV pundit on public affairs.

Unless you follow David Corenswet on Instagram—and to be fair, nearly 900,000 people do—you may not be familiar with his name. As of this weekend, though, everyone will know who he is. Corenswet is about to take up the mantle of the world’s most iconic hero: Superman,