Synthesized answer
The provided passages do not explicitly list questions that remain unanswered. However, they do indicate that Aristotle's examination of "what the best life might be for human beings" [1] necessitates an examination of "what virtue itself is and all of the various virtues that might make up the best life" [1]. This suggests that the exploration of the best life is a central question that the text aims to answer.
The passages highlight the "detailed examination" [1] and "excellent new translation and commentary" [Google Books] of the Nicomachean Ethics. They mention that the commentary frequently cites other works by Aristotle to shed new light on the texts [Google Books, Snippet]. While these descriptions indicate the depth and scholarly nature of the work, they do not specify any lingering unanswered questions within the text itself.
Synthesized from the book passages below. Chat with the book on Feynman for follow-up.
From the book
Title: Nicomachean Ethics by Aristotle Description: An detailed examination of what the best life might be for human beings. In order to anwer this question, Aristotle finds he also has to examine what virtue itself is and all of the various virtues that might make up the best life. --- Google Books --- Title: Nicomachean Ethics by Aristotle Description: An excellent new translation and commentary. It will serve newcomers as an informative, accessible introduction to the Nicomachean Ethics and to many issues in Aristotle’s philosophy, but also has much to offer advanced scholars. The…