"Facundo" is a socio-political critique and historical account of Argentina during the first half of the 19th century. The book examines the life of the gaucho, Facundo Quiroga, who becomes a powerful and ruthless warlord, illustrating the destructive effects of caudillismo (military dictatorship) on society. The author uses Quiroga's life to delve into broader themes such as the struggle between civilization and barbarism, the need for education, and the dangers of unchecked political power.

This book is a vivid and exciting travel memoir as well as a detailed scientific field journal covering biology, geology, and anthropology that demonstrates the author’s keen powers of observation, written at a time when Western Europeans were still discovering and exploring much of the rest of the world. The author's five-year journey took him from the coasts of South America, Australia, and Africa to the South Pacific islands, during which he collected and documented the natural history of these areas. The voyage and the specimens he brought back would later form the basis for his famous theory of evolution.

"Other Inquisitions" is a collection of essays that explore a wide range of topics including literature, philosophy, and metaphysics. The author uses his profound knowledge of world literature and history to delve into complex subjects such as time, identity, and infinity. He also provides insightful commentary on various authors and their works, reflecting on their influence and significance. The book is marked by the author's characteristic style of blending fiction, reality, and scholarly analysis, making it a thought-provoking read.

The book is a harrowing memoir of a journalist who was detained and tortured by the Argentine military government during the late 1970s. It vividly recounts his experiences of imprisonment, the brutal interrogation techniques he endured, and his observations on the political and social turmoil of Argentina under a repressive regime. The narrative not only exposes the personal anguish and struggle of the author but also serves as a critical examination of the impact of totalitarianism on society and the perilous state of human rights under such governance.

In this travelogue, the author embarks on a journey through the remote and enigmatic region of Patagonia, located at the southern tip of South America. Blending history, legend, and personal anecdotes, the narrative weaves through the diverse landscapes and cultures of the area, as the author encounters a cast of intriguing characters, from outlaws to settlers, all while searching for traces of its storied past. The book is as much an exploration of the author's wanderlust and love for adventure as it is a portrait of the rugged, windswept terrain and the resilient spirit of the Patagonian people.