William MacAskill is an Associate Professor in philosophy at Oxford University. He was educated at Cambridge, Princeton, and Oxford and is one of the progenitors of the effective altruism movement. His book on the topic, Doing Good Better, was published by Penguin Random House in 2015.
He is the co-founder of three non-profits based on effective altruist principles: Giving What We Can, 80,000 Hours, and the Centre for Effective Altruism. He is also a research fellow at the Global Priorities Institute.