Tim Cook pens emotional memo for Apple staff on last day as CEO, remembers Steve Jobs

On his last day as CEO, Tim Cook penned an emotional memo for Apple employees. "I love this company and the team behind it...Whatever there's to say about my success, I know it's all because of you," he wrote. Recalling late Co-founder Steve Jobs' famous quote, Cook wrote, "We've made it possible to leave our 'dent in the universe'."