Natsume Sōseki
Although hired as a professor at the Tokyo Institute of Technology, Etō devoted most of his time and efforts into literature, and published his first work, "Natsume Sōseki ron" (1955), a critique of the famous Japanese writer Natsume Sōseki, which won the Noma Literary Prize and the Kikuchi Kan Prize. He followed this with "Dorei no shisō wo haisu" (1958) and "Sakka ha kōdō suru" (1959), in which he argued that a writer's style was directly related to his personal behavior and background.