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de Caussade, Jeanne-Pierre. Abandonment to Divine Providence, translated by John Beevers. Doubleday, an Image book, New York, NY, 1975.
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You should consider the Patriarchs and all old blabbermouths like myself as impostors, babbling about something they will never be able to show you nor put in your hands. The only possible value they might have is to show that all beings do, in fact, have Buddha nature.
—from The Sayings of Old Ch'eng, translated by Mike Dickman.