(en) Tara Dixon-Engel et Mike Jackson, Sterling Biographies. Neil Armstrong: One Giant Leap for Mankind, Sterling Publishing Company Inc., (lire en ligne), p.6.
James Hansen, First Man, p.33 «It is clear that by the time Armstrong returned from Korea in 1952 he had become a type of deist, a person whose belief in God was founded on reason rather than on revelation, and on an understanding of God's natural laws rather than on the authority of any particular creed or church doctrine. While working as a test pilot in Southern California in the late 1950s, Armstrong applied at a local Methodist church to lead a Boy Scout troop. Where the form asked for his religious affiliation, Neil wrote the word «Deist.» […] Neil Armstrong's mother wrote on October 27, 1969, to a Methodist minister in Iowa “but when he was a senior in high school, and even more in college, he began wondering about the truth of Jesus Christ. I felt sure he was praying less…. Today he is not teaching his own two fine sons about Jesus Christ. This fact causes a million swords to be pierced through my heart constantly.»(en) James R. Hansen, First Man: The Life of Neil A. Armstrong, New York, Simon & Schuster, , 769p. (ISBN978-0-7432-5631-5 et 0-7432-5631-X, LCCN2005049992).