Chandler Davis (born Horace Chandler Davis and called “Chan” by his friends) was an internationally esteemed mathematician, a minor science fiction writer of note, and among the most celebrated political prisoners in the United States during the years of the high Cold War.

Dismissed from the University of Michigan (U-M) in 1954 for refusing to cooperate with the House Un-American Activities Committee (HUAC) on First Amendment grounds, he served six months in Danbury Federal Correctional Institution in Connecticut, then faced an academic blacklist that drove him to pursue a career in Canada.

The death of this endlessly resilient, lifelong radical at the age of ninety-six on September 24 in Toronto seems like the passing of an emissary from a world of the socialist Left that no longer exists. Despite errors of political judgment, which Chan was the first to acknowledge, he was for many of us a moral touchstone in our own decades of political upheaval and unpredictability.