Literary analysis of one-page work by prominent 20th-century poet, educator and diplomat (1901-1973), entitled Insomnio Tercero and also known as Esquema para desarrollar un poema. Mines work for clues to Gorostiza's later work, particularly his famed 1939 metaphysical poem Muerte sin Fin. Includes facsimile and transcription of typewritten manuscript. This book won "15o. Premio Internacional de En-sayo 2017."