Mary Wollstonecraft Shelley and Mary Wollstonecraft Shelley Valperga, or, The life and adventures of Castruccio, Prince of Lucca bookValperga, or, The life and adventures of Castruccio, Prince of LuccaMary Wollstonecraft Shelley and Mary Wollstonecraft ShelleyLondon ; Brookfield, Vt, 1996Quotes from this workI tell thee what; there is not an atom of life in this all-peopled world that does not suffer pain.Painp. 29