Peri tōn periptōmatōn tēs prōtēs pepseōs disputatio

100. Since, therefore, [the physician] recognizes a healthy constitution of the body in and through the excrements with the guide of Semiotics, he preserves the same tenor of both the parts and the excrements through the household. Conversely, the duty of prophylaktikēs prophylactic medicine is to keep and correct anyone whenever they appear to have lapsed from the best state of health, by using moderate opposites.

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