Lucius is a postdoctoral researcher in moral psychology at Harvard University. His research focuses on investigating how people give to charity, how they morally value animals, and how they think about the future of humanity. He co-founded and directed the Effective Altruism Foundation (Stiftung für Effektiven Altruismus) and remains an advisor for the foundation. He has a naturalistic worldview. A central focus of his work is countering speciesism and on helping humans extend their moral consideration to other sentient beings.