A search of the book revealed that indeed the quote was part of a passage in which Durant discussed Aristotle's "Nicomachean Ethics." ... often finding that the quotes were misattributed. Sources.

Aristotle's Nicomachean Ethics is a classic work of philosophy, especially in virtue ethics. I hope this video can help guide you through the book and help you read it for yourself. Topics include ...

Michael Pakaluk, Aristotle's Nicomachean Ethics: An Introduction (Cambridge University Press, 2005) A. Rorty (ed.), Essays on Aristotle's Ethics (University of California Press, 1981) ...

According to AEI scholar Leon Kass, Aristotle’s “Nicomachean Ethics,” known for its teachings on human virtue or human excellence, reveals many truths if approached with the right experience ...

As is often noted, piety is not among the list of moral and intellectual virtues mentioned by Aristotle in the Ethics. I argue that this is neither an oversight on Aristotle’s part nor a subtle way ...