Peale was a prolific writer; "The Power of Positive Thinking" is by far his most widely read work. First published in 1952, it stayed on the "New York Times" bestseller list for 186 consecutive weeks, and according to the publisher, Simon and Schuster, the book has sold around 5 million copies. The fact that the book has sold 5 million copies is printed on the cover of the current edition in both paperback and hard cover, and directly contradicts exaggerated claims that the book has sold more than 20 million copies in 42 languages. The publisher also contradicts the translation claim, saying the book has been translated into only 15 languages. Nearly half of the sales of the book (2.1 mil.) occurred before 1958, and by 1963, the book had still only sold 2 million copies according to Peale. Since then, the book has sold less than 3 million copies over the past 60 years. Some of his other popular works include "The Art of Living", "A Guide to Confident Living", "The Tough-Minded Optimist", and "Inspiring Messages for Daily Living".