Fernando António Nogueira Pessoa (Lisbon, June 13, 1888 - Lisbon, November 30, 1935) was a poet, philosopher, playwright, essayist, translator, publicist, astrologer, inventor, businessman, commercial correspondent, literary critic and Portuguese political commentator . As a poet, he wrote under several personalities - heteronyms, such as Ricardo Reis, Álvaro de Campos and Alberto Caeiro.