William MacAskill is an Associate Professor in Philosophy at Lincoln College, Oxford. He was educated at Cambridge, Princeton, and Oxford. He is one of the primary voices in a movement in philanthropy known as “effective altruism” and the cofounder of three non-profits based on effective altruist principles: Giving What We Can, 80,000 Hours, and the Centre for Effective Altruism. William is the author of Doing Good Better: Effective Altruism and a Radical New Way to Make a Difference.