Nicomachean Ethics
The "Eudemian Ethics" is less well known than Aristotle's "Nicomachean Ethics", and, when scholars refer simply to the "Ethics" of Aristotle, the latter is generally intended. The "Eudemian Ethics" is shorter than the "Nicomachean Ethics", eight books as opposed to ten, and some of its most interesting passages are mirrored in the latter. Books IV, V, and VI of the "Eudemian Ethics", for example, are identical to Books V, VI, and VII of the "Nicomachean Ethics", and as a result some critical editions of the former include only Books I–III and VII–VIII (the omitted books being included in the publisher's critical edition of the latter).