Meanings of unlettered people in English

They sing these with the wild, fervid impressiveness characteristic of the ballad singing of unlettered people.

Too many unlettered people hate the teacher for teaching; and too many lettered people hate the teacher for not teaching.

They are a half-civilised, unlettered people, proverbial for a species of knavish acuteness, which serves them in lieu of wisdom.

But their importance to the unlettered people of the Middle Ages cannot be overestimated; and the incentive to magnificence of artistic conception was correspondingly great.

The most primitive and unlettered peoples and tribes have always shown and still show this universal characteristic.