SHENYANG, China — Imprisoned for all the seven years since he was awarded the Nobel Peace Prize, Liu Xiaobo never renounced the pursuit of human rights in China, insisting on living a life of “honesty, responsibility and dignity.” China’s most prominent political prisoner died Thursday of liver cancer at 61.

His death — at a hospital in the country’s northeast, where he’d been transferred after being diagnosed — triggered an outpouring of dismay among his friends and supporters, who lauded his courage and determination.

“There are only two words to describe how we feel right now: grief and fury,” family friend and activist Wu Yangwei, better known by his penname Ye Du, said by phone. “The only way we can grieve for Xiaobo and bring his soul some comfort is to work even harder to try to keep his influence alive.”