John Kaag is the Donahue Professor of Ethics and the Arts at the University of Massachusetts Lowell and external professor at the Santa Fe Institute. Between 2010 and 2016, he was visiting assistant professor of writing at Harvard University. He is the author of Sick Souls, Healthy Minds: How William James Can Save Your Life (Princeton). Jonathan van Belle is a writer and editor whose work has appeared in Aeon, Fast Company, Times Higher Education, and other publications. Kaag and van Belle are the coauthors of Henry at Work: Thoreau on Making a Living (Princeton).