The world paid tributes to the former Apple CEO and co-founder Steve Jobs on Monday, October 5, his fourth death anniversary. So here is a letter in his memory by none other than the present Apple CEO, Tim Cook.

Remembering Steve for who he was and what he stood for. We honor him by continuing the work he loved so much. pic.twitter.com/6UiXBjYe3l

— Tim Cook (@tim_cook) October 5, 2015

This is what he wrote to all the employees at Apple inspiring them to carry on the legacy of Steve Jobs as reported by Apple Insider :