William MacAskill is a philosopher, ethicist, and one of the originators of the effective altruism movement. His research focuses on the fundamentals of effective altruism - the use of evidence and reason to help others by as much as possible with our time and money, with a particular concentration on how to act given moral uncertainty. He is the author of Doing Good Better - Effective Altruism and a Radical New Way to Make a Difference. He is a co-founder and the President of the Centre for Effective Altruism (CEA) that encourages people to commit to donate at least 10% of their income to the most effective charities. He co-founded 80,000 Hours, a non-profit that provides research and advice on how you can best make a difference through your career.