purify the “five senses” (Letters 208 and 612). The correspondence constantly emphasizes the fact that “you shall know them by their works” (Mt 7:16) or fruits (cf. Letters 22, 23, 94, 238, 401, 405, 453, 455). Barsanuphius and John constantly underline the importance of balance and discretion. For instance, a monk who is ill should not also expect to fast because the body is already being strained and restrained by the illness itself (Letter 79; see also Letter 212). In
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