This thesis borders on the fictional. Its protagonist is Vieira, already an old man, haunted by the past, reminiscing and writing, a character created by the omniscient narrator who deciphers his gestures, words and even thoughts. Through Vieira we learn something not only about his own life but also about that of Ignatius of Loyola, his great master. An analysis is made of the Reformation and the Counterreformation, from their very beginnings, and of their influence on Vieira, showing the stands he took in relation to the two movements that changed the history of the Church. In this context we will examine the artistic movement that had such influence on Vieira, the baroque - a transgressive movement, with its trends and characteristics, which the Church tried to appropriate for its own propaganda purposes.Finally, we will also analyze a few sermons, beginning with those known under the title The Five Stones in David`s Sling, with the emphasis on the issue of self-knowledge, which Vieira approaches by means of parables and favorite Biblical stories.In the Rosary sermons, which refer to the condition of black people, we underscore their very strong social and political flavor, with their harsh criticism of the powerful owners of sugar plantations.In the Mandate sermons, the theme is the contrast between divine love and human love; in them Vieira discusses the topic of fine love, demonstrating his views through a counterpoint between the fineness of the two loves, the divine and the human, the latter always doubtful and inconstant.