Chapters 2 through 11 are modified versions of previously published essays.
- Chapter 2: Haig, D. 1997. “The Social Gene.” In Behavioural Ecology, 4th ed., ed. J. R. Krebs and N. B. Davies, 284–304. Oxford: Blackwell Scientific.
- Chapter 3: Haig, D. 2006. “The Gene Meme.” In Richard Dawkins: How a Scientist Changed the Way We Think, ed. A. Grafen and M. Ridley, 50–65. Oxford: Oxford University Press.
- Chapter 4: Haig, D. 2012. The strategic gene. Biology and Philosophy 27:461–479.
- Chapter 5: Haig, D. 2008. “Conflicting Messages: Genomic Imprinting and Internal Communication.” In Sociobiology of Communication, ed. P. D’Ettorre and D. P. Hughes, 209–223. Oxford: Oxford University Press.
- Chapter 6: Haig, D. 2006. “Intrapersonal Conflict.” In Conflict, ed. M. K. Jones and A. C. Fabian, 8–22. Cambridge: Cambridge University Press, Cambridge.
- Chapter 7: Haig, D. 2003. “On Intrapersonal Reciprocity.” Evolution and Human Behavior 24:418–425.
- Chapter 8: Haig, D. 2011. “Sympathy with Adam Smith and Reflexions on Self.” Journal of Economic Behavior and Organization 77:4–13.
- Chapter 9: Haig, D. 2013. “Proximate and Ultimate Causes: How Come? And What For?” Biology and Philosophy 28:781–786.
- Chapter 10: Haig, D. 2015. “Sameness, Novelty, and Nominal Kinds.” Biology and Philosophy 30:857–872.
- Chapter 11: Haig, D. 2014. “Fighting the Good Cause: Meaning, Purpose, Difference, and Choice.” Biology and Philosophy 29:675–697.