How Apple CEO Tim Cook Paid Tribute on Steve Jobs' Birthday

Tim Cook sent a tweet on what would have been Jobs' 60th birthday.

Tweeting a nugget of Jobsian wisdom, Cook wrote "the only way to do great work is to love what you do," referencing a quote from a commencement address Jobs gave at Stanford in 2005.

"Your work is going to fill a large part of your life, and the only way to be truly satisfied is to do what you believe is great work. And the only way to do great work is to love what you do," Jobs famously told the graduates. "If you haven't found it yet, keep looking. Don't settle."

On Aug. 24, 2011, weeks before his death, Jobs resigned from his post at Apple and recommended the board name Cook as the next chief executive. Jobs died on Oct. 5, 2011, after a battle with cancer.