"Αυτός είναι ένας άριστος πολίτης."

Translation: He is an excellent citizen.

[jeanprendiville]

" perfect is too extreme" but άριστος is translated as perfect in all the other sentences where it is used. A perfect citizen as opposed to a perfect person is simply one who obeys the laws of the country. I think " perfect" should be accepted as an alternative.

[Dimitra956826]

I guess it's not a bad idea. It's been added, thank you for the input. ^.^