David Roberts (1943–2021) was the author of thirty books on mountaineering, exploration, and anthropology. His books have won the Boardman Tasker Award for Mountain Literature and the Grand Prize at the Banff Mountain Book Competition.
""[G]ripping ... uplifting."" -- The Wall Street Journal ""This encapsulating narrative pinpoints human spirit and the limitations of the human body in the world of thrilling adventure."" -- Adventure Travel ""... his tales are thoughtful and insightful... A thoroughly enjoyable and readable book which manages to provide food for thought as well as a healthy dose of vicarious adrenalin."" -- The Scottish Mountaineer ""Limits of the Known takes the reader on magnificent journeys with some of the greatest explorers of their generations. The book is meticulously researched and skilfully written."" -- Climber ""What will almost certainly be the last of Roberts's many books is powerful and honest testimony to a life rich in both action and self-examination."" -- Times Literary Supplement