We are all worms. But I do believe that I am a glow-worm

From Considerable Indiscretions by David Spiller in a review in Slightly Foxed, Autumn 2012.

. . . let us revisit Violet Bonham-Carter, recording her first meeting with the 32-year-old Churchill at a dinner in 1906, nine years before Colville was born. Churchill 'burst forth into an eloquent diatribe on the shortness of human life, the immensity of possible human accomplishments . . . in a torrent of magnificent language . . . and ended up with the words I shall always remember: "We are all worms. But I do believe that I am a glow-worm."'