The second line of
谭嗣同's 《
狱中题壁》 of 1898.
杜根 was an Eastern Han official who urged the regent, Empress Dowager Deng, to hand power back to the emperor; she had him beaten in a sack, and he survived by playing dead for three days, hid for years and was given office again after her death.
须臾 means 'a moment'.
