Contributor(s): Dr William MacAskill | Should I work for a non-profit organisation in Africa? Or should I go into the City, and try to earn as much as I can to donate to good causes? William MacAskill is a research associate in the Oxford Uehiro Centre for Practical Ethics at the University of Oxford and is also president of 80,000 Hours ethical career advisory service. Credits: Tom Sturdy (Audio Post-Production), LSE AV Services (Audio Recording)