This book is an introduction to and interpretation of the world of Fernando Pessoa (1888-1935), one of the most fascinating and complex figures in European literary modernism and the avant-garde. Raised in South Africa and writing much of his literary work in English, Pessoa nevertheless almost never left the city of Lisbon after returning in 1905. Pessoa is known for abolishing the authorial self and for dividing his writings among a large number of other personalities - the heteronyms - who wrote through him, each in a completely different style. The theory of 'adverse genres' introduced in this book aids understanding of his paradoxical and contradictory use of genres. Through the invented 'coterie of authors,' Pessoa explored mixed writing by changing the relationship between form and content, authorship and text. Adverse Genres describes how Pessoa selected genres from the European tradition (Ricardo Reis' 'Horatian' odes, Álvaro de Campos' worship of Whitman, Alberto Caeiro's pastoral and metaphysical, Bernardo Soares' philosophical diary), into which he put a different and incongruent content taken from modernist, contemporary themes. By creating anomalies between form and content, or authors and texts, Pessoa gives new life and definition to traditional historical genres for a modernist age. In doing so, he enhances the normal expressive potential of each genre by incorporating uncharacteristic content and questioning authorship. Pessoa uses this procedure in his 1907 short story, 'A Very Original Dinner' in the 'Cancioneiro' or collected poems written under the name Fernando Pessoa; in his love letters to Ophélia Queirós; in his 1922 story 'The Adventure of the Anarchist Banker;' in his collection of quatrains derived from Portuguese popular verse; and, finally, in his problematic non-existence as 'the man who never was,' in Jorge de Sena's expression, who exchanged a normal life for an entirely literary world of the imagination. This book addresses Pessoa's desire to be an entire literature, a new literary history, as it were, full of diverse authors and styles, as if they were characters or roles in a dramatic theater of the self in literary modernism.