But being overborne with numbers, and nobody daring to face about, stretching out his hands to heaven, [Romulus] prayed to Jupiter to stop the army, and not to neglect but maintain the Roman cause, now in extreme danger. The prayer was no sooner made, than shame and respect for their king checked many; the fears of the fugitives changed suddenly into confidence.
PlutarchNothing can produce so great a serenity of life as a mind free from guilt and kept untainted, not only from actions, but purposes that are wicked. By this means the soul will be not only unpolluted but also undisturbed. The fountain will run clear and unsullied.
Plutarch