In 1930, the Spanish philosopher Miguel de Unamuno (1864–1936) wrote one of his most well-known novels, San Manuel Bueno, mártir [Saint Manuel Bueno, Martyr]. The novel is about the fictional character Manuel Bueno, a catholic priest from a small Spanish village who, despite being unable to believe the Christian claim that there is an after earthly death life, devotes himself to the spiritual care of his people, being thereby sanctified after his death. The aim of this paper is to show (...) that the guideline of San Manuel Bueno, mártir is the expression, in fictional, non-philosophical language, of the conception of religious faith Unamuno had already defended in his major philosophical work, Del sentimiento trágico de la vida en los hombres y los pueblos [The Tragic Sense of Life in Men and Nations]. (shrink)