Rather than return to England immediately, where the Beatles were planning the launch of their Apple record label, Harrison had extended his time away by visiting his mentor Ravi Shankar in Madras. When he returned to London in late April 1968, according to Apple executive Derek Taylor, Harrison "reacted with real horror" at the lavishness of Apple's campaign. Reflecting the idealism behind the company, Apple Corps had taken out print advertisements inviting any budding artist to submit their creative ideas. The London offices were inundated with submissions, almost all of which were ignored, along with crowds of eccentrics responding to the Beatles' invitation. In "Not Guilty", the line "I won't upset the Apple cart" was a deliberate reference to the company, while "making friends with every Sikh" referred to activities with the Maharishi. In his 1980 autobiography, "I, Me, Mine", Harrison says that the lyrics address "Paul-John-Apple-Rishikesh-Indian friends, etc."