Lausiac History
Palladius's collection of biographies of Egyptian and Eastern monks, cited for John the Anchorite's teaching on purity and spiritual knowledge.
Preface and Praise of Sacred Scripture
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Chapter V: On the Dispositions Required for This Study
— Chapter 40 cited: John the Anchorite's teaching on purity and knowledge
"The same thing that great St. John the Anchorite taught by his word and example, as reported by Palladius in the Lausiac History, chapter 40."