Tim Cook recently addressed graduates at George Washington University, and spoke about this early days at Apple. "I met someone who made me question everything [when I started at Apple], who upended all of my assumptions in the very best way." Of course, that someone was Steve Jobs.
Cook also took the opportunity to joke with the crowd. "Those of you with an iPhone, just place it in silent mode," he said, "and those of you who don't have an iPhone, please pass it to the center aisle. Apple has a world-class recycling program."