Apple once again honors Martin Luther Day by dedicating their home page to his memory with one of his quotes: "Life's most persistent and urgent question is: What are you doing for others?" Cook told Charlie Rose in an interview last September that he looks every day at photos in his office of Robert Kennedy and Rev. King, his personal heroes. In a 2013 speech at the United Nations Cook noted that "They sacrificed everything, including their lives, as champions of human rights and human dignity. Last year Apple honored Rev. King with the photo below.