If "The Ring" refers to the work "The Ring of Sixtus", it is highly unlikely that these quotes are attributed correctly. It is widely believed that "The Ring of Sixtus" was written by a Pythagorean philosopher.
More quotes by Pope Sixtus I
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Most intellectual people do not believe in God, but they fear him just the same.
God seeks comrades and claims love,
the Devil seeks slaves and claims obedience.
Attribution
Quote text and notes from Wikiquote: Pope Sixtus I (page history), available under CC BY-SA 4.0. Source quality and labels are our own summary of what Wikiquote records.