1. C. S. Lewis, “The Inner Ring,” Memorial Lecture, King’s College, University of London, 1944.
2. Miller McPherson, Lynn Smith-Lovin, and Matthew E. Brashears, “Social Isolation in America: Changes in Core Discussion Networks over Two Decades,” American Sociological Review 71, no. 3 (2006): 353–75.
3. “Relationships Boost Survival by 50 Percent,” Scientific American, July 28, 2010, www.scientificamerican.com/article/relationships-boost-survival.
4. “Nones on the Rise,” Pew Research on Religion and Public Life, October 9, 2012, www.pewforum.org/2012/10/09/nones-on-the-rise/.
5. Ibid.
6. DDB Needham Life Style Surveys, 1975–99, quoted in Robert Putnam, “Bowling Alone: The Collapse and Revival of American Community,” Journal of Democracy 6, no. 1 (1995): 65–7
7. John R. Robinson and Geoffrey Godbey, Time for Life: The Surprising Ways Americans Use Their Time, 2nd ed. (University Park: Pennsylvania State University Press, 1999).
8. DDB Needham Life Style Surveys.
9. Millennials: Breaking the Myths, Nielsen, nielsen.com, January 27, 2014.
10. The 2013 Millennial Impact Report, Achieve, achieveguidance.com, 2013.
11. Fifteen Economic Facts about Millennials, Council of Economic Advisors, whitehouse.gov, October 2014.
12. Inspiring the Next Generation: The 2014 Millennial Impact Report, Achieve, casefoundation.org, 2014.
13. Quoted in Robert Waldinger, “The Good Life,” TEDxBeaconStreet, November 30, 2015.
14. J. Holt-Lunstad, T. B. Smith, and J. B. Layton, “Social Relationships and Mortality Risk: A Meta-analytic Review,” PLoS Med 7, no. 7 (2010), e1000316, doi:10.1371/journal.pmed.1000316.
15. Seth Godin, Tribes: We Need You to Lead Us (London: Penguin, 2008), 24.
1. Putnam, “Bowling Alone,” 71.
2. Stephanie Cooperman, “Getting Fit, Even If It Kills You,” New York Times, December 22, 2005.
3. Mark Oppenheimer, “When Some Turn to Church, Others Go to CrossFit,” New York Times, November 27, 2015.
4. Christie Aschwanden, “An Insider’s Guide to CrossFit,” New York Times (blog), August 18, 2014, http://well.blogs.nytimes.com/2014/08/18/crossfit-book-breathe-fire/?_r=0.
1. Yascha Mounk, “Is Harvard Unfair to Asian-Americans?,” New York Times, November 24, 2014.
2. Ibid.
1. Roy Baumeister, Kathleen Vohs, Jennifer Aaker, and Emily Garbinsky, “Some Key Differences between a Happy Life and a Meaningful Life,” Journal of Positive Psychology 8, no. 6 (2013): 505–16.
2. Excerpts from the speech by International Olympic Committee president Thomas Bach, opening ceremony, 126th session, Sochi, February 4, 2014 (slightly modified).
3. Excerpts from the speech by International Olympic Committee president Jacques Rogge, opening ceremony, London Olympic Games, July 28, 2012 (slightly modified).
1. Brené Brown, Daring Greatly: How the Courage to Be Vulnerable Transforms the Way We Live, Love, Parent, and Lead (New York: Gotham Books, 2012), 37.
1. Interview with Lama Surya Das, February 26, 2016, www.surya.org.
2. Lewis, “Inner Ring.”
3. I’m taking this term from ancient Christian tradition and using it slightly differently. The Diaconate is the official body of Deacons. The term deacon comes from the ancient Greek word diakonos, which means “servant.” Deacons serve the church body.
4. A. H. Maslow, Toward a Psychology of Being (New York: Van Nostrand, 1968).
5. Roy F. Baumeister and Mark R. Leary, “The Need to Belong: Desire for Interpersonal Attachments as a Fundamental Human Motivation,” Psychological Bulletin 117 (1995): 497–529.
6. S. E. Asch, “Effects of Group Pressure upon the Modification and Distortion of Judgment,” in Groups, Leadership, and Men, edited by H. Guetzkow (Pittsburgh, PA: Carnegie Press, 1951).
7. Alfred Adler, quoted in Gina Stepp, “A Psychology of Change,” Vision (Winter 2011), www.vision.org/visionmedia/alfred-adler-adlerian-psychology/41045.aspx.
8. Carolyn Schwartz, Janice Bell Meisenhelder, Yunsheng Ma, and George Reed, “Altruistic Social Interest Behaviors Are Associated with Better Mental Health,” Psychosomatic Medicine 65, no. 5 (2003): 778–85.
9. W. T. Harbaugh, U. Myer, and D. R. Burghart, “Neural Responses to Taxation and Voluntary Giving Reveal Motives for Charitable Donations,” Science 316, no. 5831 (2007): 1622–25.
10. Baumeister, Vohs, Aaker, and Garbinsky, “Key Differences between a Happy Life and a Meaningful Life.”
1. Elinor Ostrom, Governing the Commons: The Evolution of Institutions for Collective Action (Cambridge: Cambridge University Press, 1990).
The quotation from Dorothy Day appears in The Long Loneliness: The Autobiography of Dorothy Day (Garden City, N.Y.: Image Books, 1959), p. 286.