“My model for business is The Beatles: They were four guys that kept each other’s negative tendencies in check; they balanced each other. And the total was greater than the sum of the parts. Great things in business are never done by one person, they are done by a team of people.”

「我的商業榜樣是披頭四：他們是四個人互相監督制衡彼此的負面性格；他們彼此相互平衡。而總成就比個別加起來的效益還要大。商業里偉大的事從來不是由一個人所完成，它們是由一個團隊所完成。」

tendency (n.) 是「性格的傾向」，如：criminals with aggressive or anti-social tendencies (有攻擊或反社會傾向的犯人。) the total is greater than the sum of the parts 是指「總效益比個別加起來所預期得到的還要更多」。
這段話出自 2008 年賈伯斯與美國 CBS News 的訪談。