Full Idea
I do not know whether, if our reverence for the gods were lost, we should not also see the end of good faith, of human brotherhood, and even of justice itself, which is the keystone of all the virtues.
Gist of Idea
I wonder whether loss of reverence for the gods would mean the end of all virtue
Source
M. Tullius Cicero (On the Nature of the Gods ('De natura deorum') [c.44 BCE], I.3)
Book Reference
Cicero: 'The Nature of the Gods', ed/tr. McGregor,Horace [Penguin 1972], p.70