Arendt, Hannah. Men in Dark Times. New York: Harcourt, 1968.
Arendt, Hannah. “Philosophy and Politics”, Social Research, Vol. 57, No. 1, 1990: 73-103.
Arendt, Hannah. The Human Condition. Chicago and London: The University of Chicago Press, 1998.
Aristotle. Nicomachean Ethics. Translated by H. Rackham. Loeb Classical Library. Cambridge: Harvard University Press, 1934.
Ferber, Rafael, and Gregor Damschen, “Is the Idea of the Good Beyond Being? Plato’s epekeina tês ousias Revisited.” In Second Sailing: Alternative Perspectives on Plato, ed. Debra Nails and Harold Tarrant, 197-203. Espoo: Societas Scientiarum Fennica, 2015.
Gadamer, Hans-Georg. Gesammelte Werke in 10 Bänden. Tübingen: J. C. B. Mohr, 1995.
Heyking, John von. The Form of Politics: Aristotle and Plato on Friendship. Montreal: McGill-Queen’s University Press, 2016.
Holst, Jonas. “Ethik der Freundschaft: Über eine nachgelassene Idee im Werk Friedrich Nietzsches”. In Nietzscheforschung 20 (Berlin: Akademie Verlag, 2013), 379-389.
Lynch, Sandra. Philosophy and Friendship. Edinburgh: Edinburgh University Press, 2005.
MacIntyre, Alasdair. After Virtue. London: Duckworth, 2000.
Nichols, Mary P. Socrates on Friendship and Community: Reflections on Plato’s Symposium, Phaedrus, and Lysis. Cambridge: Cambridge University Press, 2009.
Nietzsche, Friedrich. Nachlass 1869-1874: KSA 7. München/Berlin: DTV/de Gruyter, 1999.
Nietzsche, Friedrich. Nachlass 1875-1879: KSA 8. München/Berlin: DTV/de Gruyter, 1999.
Nietzsche, Friedrich. Sämtliche Briefe Band 2-3. München/Berlin: DTV/de Gruyter, 2003.
Nietzsche, Friedrich. Human, All Too Human: A Book for Free Spirits. Translated by R. J. Hollingdale. Cambridge: Cambridge University Press, 2004.
Nietzsche, Friedrich. Daybreak: Thoughts on the Prejudices of Morality. Translated by R. J. Hollingdale. Cambridge: Cambridge University Press, 2003.
Pakaluk, Michael. Other Selves: Philosophers on Friendship. Hackett: Indianapolis, 1991.
Plato. Five Dialogues: Euthyphro, Apology, Crito, Meno, Phaedo. Translated G. M. A. Grube. Indianapolis: Hackett, 2002.
Plato on Love. Lysis, Symposium, Phaedrus, Alcibiades, ed. C. D. C. Reeve. Indianapolis: Hackett, 2006.
Plato. Protagoras. Translated by C. C. W. Taylor. Clarendon Series. Oxford: Oxford University Press, 1992.
Plato. Republic Books 1-5, 6-10. Translated by Paul Shorey. Loeb Classical Library. Cambridge: Harvard University Press, 1989/2013.
Plato. Theaetetus. Translated by John McDowell. Oxford: Oxford University Press, 2014.
Platon. Protagoras, Lysis, Alkibiades I. In Werke 1. Translated by Friedrich Scleiermacher. Darmstadt: WBG, 2001.
Platon. Apologia Sokratous, Menon. In Werke 2. Translated by Friedrich Scleiermacher. Darmstadt: WBG, 2001.
Sløk, Johannes. Protagoras. Copenhagen: Gyldendal, 1963.
Smith Pangle, Lorraine. Aristotle and the Philosophy of Friendship. Cambridge: Cambidge University Press.
Stern-Gillet, Suzanne. Aristotle’s Philosophy of Friendship. New York: State University of New York Press, 1995.
Szlezák, Thomas A. “Methodische Bemerkungen zur Diskussion um die mündliche Philosophie Platons.” Philotheos 5 (2005): 174-190.
Xenophon. Memorabilia, Oeconomicus, Symposium, Apology. Loeb Classical Library. Harvard: Cambridge University Press, 1968.