See the instructive passage in Aristotle, Nic. Eth.
Yet instructive parallels may be found in ancient literatures.
The study of the clan-group as an organization is as instructive here as in other fields.
The census of June 1920 gave instructive figures: 69.82% able to read, children below 10 years included; 50% able to read and write.
In 1827 and the two following years, Cunningham prosecuted instructive explorations on both sides of the Liverpool range, between the upper waters of the Hunter and those of the Peel and other tributaries of the Brisbane north of New South Wales.