Longtime peace activist Frances Crowe has died at the age of 100, leaving behind seven decades of decades work towards justice and inspiration for those still working for a better world.

She died last Tuesday in her home in Northampton, Massachusetts, where she lived since 1951, surrounded by her family, who wrote that her motto was “Live simply so that others can simply live.”

Crowe, wrote Janet and Wayne Dinelli in the online guest book for her obituary, was a “true spirit and a trailblazer in the name of peace.”

It was just months ago that the local Daily Hampshire Gazette named the Quaker centenarian their person of the year. “Within the activist community, everyone’s been touched by her,” Northampton High School student Cherilyn Strader told the paper. “There’s no way around the impact that she’s had.”

It was back in 1945 that her tireless activism began—when the U.S. dropped the atomic bombs on Hiroshima and Nagasaki. At the time, her husband, the late Tom Crowe, was a physician in the Army Medical Corps.

When Crowe heard about the bombing, she told Democracy Now! in 2005, “I really unplugged the iron, left the placemat that I was ironing, and went out looking for a peace center in the streets of New Orleans.”