"Labyrinths" is a collection of short stories and essays that explore complex themes of infinity, parallel universes, and the blurred lines between reality and illusion. The narratives often feature protagonists who are scholars or librarians, trapped in surreal, metaphysical landscapes. The author's unique writing style combines elements of magical realism, philosophy, and detective fiction, creating an intricate web of narratives that challenge the reader's perception of reality and fiction.

"The Book of Disquiet" is a posthumously published collection of thoughts and musings of a solitary dreamer, who is a Lisbon-based bookkeeper. The book delves into the mind of a man who is discontented with his mundane life and finds solace in dreaming and writing. The narrative is a profound reflection on life, solitude, and the nature of humanity, filled with philosophical insights and poetic language. The protagonist's introspective journey and his struggles with existential despair make it a seminal work in the genre of literary modernism.

This avant-garde novel invites readers into a non-linear narrative that can be read in two different orders, following the life of Horacio Oliveira, an Argentine intellectual living in Paris with his lover, La Maga. The story explores philosophical and metaphysical themes, delving into the nature of reality and the human condition, while also examining the struggles of intellectual and emotional life. The second part of the novel takes place in Buenos Aires, where Horacio returns after La Maga disappears, and where he grapples with his past, his identity, and his place in the world.

"Los Siete Locos" is a complex and dark novel set in the 1920s in Buenos Aires. The story revolves around a man who, disillusioned with his mundane life and the corruption he sees around him, becomes involved with a group of anarchists who plan to overthrow the government. The protagonist is drawn into a world of madness, conspiracy, and philosophical debate, as he grapples with his own sanity and the morality of his actions. The book explores themes of existentialism, societal decay, and the blurred line between sanity and insanity.

This collection brings together the rich and varied poetic works of one of Portugal's most celebrated literary figures, a writer known for his multiple writing personas, or 'heteronyms.' The book showcases a selection of poems that delve into themes of existentialism, identity, and the nature of reality, reflecting the author's deep introspection and his fascination with the self and its multiplicities. The poems range from sonnets to free verse, each offering a window into the author's complex inner world and his philosophical musings, all while capturing the unique spirit of early 20th-century Portuguese culture.