Life of Saint Antony
Athanasius's biography of Antony the Great, foundational text of Christian monasticism, describing Antony's conversion by Scripture and his teaching on purity of heart.
Preface and Praise of Sacred Scripture
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Chapter I: On the Excellence, Necessity, and Fruit of Sacred Scripture
— Athanasius cited as source for Antony's conversion by the Gospel text "If you wish to be perfect, go, sell all"
"So St. Athanasius writes in his Life."
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Chapter V: On the Dispositions Required for This Study
— Antony quoted (via Athanasius) on purity of heart and foreknowledge
"St. Anthony, as reported by Athanasius: If anyone, he says, is held by a desire of knowing even future things, let him have a pure heart"