1. Appiah, Anthony. 2008. Experiments in Ethics. Cambridge, MA: Harvard University Press.
2. Baumeister, Roy. 1992. Meanings in Life. Hillsdale: Erlbaum.
3. Benyus, Janine M. 1997. Biomimicry: Innovation inspired by nature. New York: Harper Collins Publishers.
4. Brook, Isis. 2010. The Virtues of Gardening. In Gardening. Philosophy for Everyone: Cultivating Wisdom, ed. Dan O’Brien, 13–25. Oxford: Wiley Blackwell.
5. Campbell, Stephen M., and Sven Nyholm. 2015. Anti-Meaning and Why It Matters. Journal of the American Philosophical Association 1 (4): 694–711.