The Power of Positive Thinking of followers testified that Peale’s message changed their lives for the better and represented the best combination of faith and pragmatism.” This is evidenced by the popularity of Peale's book, which sold more than 5 million copies worldwide and was eventually translated into over 40 languages. In addition, Peale was close friends with American presidents Eisenhower and Nixon, both of which highly regarded his positive thinking teachings. Countless others accredited "The Power of Positive Thinking" for their success in overcoming obstacles including George Foster, of the Cincinnati Reds, Rev. Robert Schuller, founder and pastor of the Crystal Cathedral in Garden
The Power of Positive Thinking effectiveness of Peale's positive thinking techniques in the antagonistic environment Peale presents. Episcopal theologian John M. Krumm criticized Peale's teachings for their basis in religion, defining his teachings as heretical. Krumm writes that "the emphasis upon techniques such as the repetition of confident phrases” or “the manipulation of certain mechanical devices” gives “the impression of a thoroughly depersonalized religion. Very little is said about the sovereign mind and purpose of God; much is made of the things men can say to themselves and can do to bring about their ambitions and purposes." Krumm argues that Peale does not have the