"Lost in the Cosmos: The Last Self-Help Book" is a non-fiction work by American author Walker Percy. The book is a philosophical exploration of the human condition, with a particular focus on the challenges of modern life. The book is divided into two parts: the first part is a series of humorous quizzes and surveys designed to help readers understand their place in the universe, while the second part is a more serious exploration of the meaning of human existence. The author explores questions such as the search for meaning and purpose in life, the role of religion and spirituality, and the impact of modern technology on human consciousness. Percy's writing style is known for its wit, irony, and depth of insight. "Lost in the Cosmos" has been praised for its thought-provoking exploration of the human psyche and its ability to make readers question their assumptions about themselves and the world around them.