Lennon's experience in primal therapy strongly influenced both the lyrical content of the album, pushing him toward themes of child–parent relationships and psychological suffering, and the simple yet intense style of the album's music. Throughout the album Lennon touches on many personal issues: his abandonment by his parents, in "Mother"; the means by which young people are made into soldiers, in "Working Class Hero"; a reminder that, despite his rage and pain, Lennon still embraces "Love"; and "God", a renunciation of external saviours. In the piano-driven climax of "God", after listing a handful of things he does not believe in, including Jesus, Hitler, Buddha, Elvis, "Zimmerman" (Bob Dylan) and Beatles, Lennon proclaims that he believes only in himself and Ono.