The Good Life for a Human Being
Perseus Digital Library:
Plato, Euthydemus, Republic
Aristotle, Nicomachean Ethics, Eudemian Ethics
Henry George Liddell, Robert Scott, A Greek-English Lexicon:
ἐνέργεια, energeia, noun, "activity,"
ἔργον, ergon, noun, "work,"
εὐδαιμονία, eudaimonia, noun, "happiness,"
ἠθική, ἠθική, adjective, "moral,"
τέλειος, teleios, adjective, "having reached its end,"
τελειοτάτην, teleiotatēn, adjective, superlative of τέλειος
Arizona State University Library. Loeb Classical Library:
Aristotle, Parts of Animals
"Aristotle thinks objects have a function. We can readily understand what he means in the case of artifacts: they are constructed the way they are constructed to fulfill a certain task or to exhibit a certain kind of behavior. Fulfilling this task or exhibiting this behavior is their function; and if they do exhibit this behavior, we say they are functioning. Aristotle, like Plato before him, extends the notion of function to natural objects, especially to living things. If a living thing is functioning, it will behave in a certain, characteristic way; to behave in this way is its function. In addition, Aristotle thinks that the capacity of an object to behave in this characteristic way depends on its organization, structure, and disposition, indeed, he thinks that it is just this disposition or organization that enables the object to behave the way it does. Now, for Aristotle, the form is this disposition or organization, while the matter is what is thus disposed or organized" (Michael Frede, "Individuals in Aristotle," 65-66. Essays in Ancient Philosophy (University of Minnesota Press, 1987), 49-71).