Today is Nelson Mandela’s birthday. He turned 91. It is also the first Mandela Day, a day to be devoted to transforming our world into a better place. While we take this day to celebrate the life, struggles, and accomplishments of Nelson Mandela and all other people who have struggled against the fists of oppression, may we also remember that every day should be a Mandela Day. As he reminds us, “after climbing a great hill, one only finds that there are many more hills to climb.”