Moschion
MOSCHION. Well, Zeuxippus, let us say no more about Glaucus, who is so self-important that he wants to be a law unto himself, needing no help from philosophy; but do you tell us in detail the whole discussion; or, if you prefer, just those statements Homer, Od. iv. 392. which you first referred to as not altogether carefully formulated, which you say Glaucus seized upon.
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Zeuxippus
ZEUXIPPUS. Well, our companion Plutarch himself presumably. asserted that he had heard somebody say that keeping the hands always warm, and never allowing them to get cold, is in no small measure conducive to health, and, conversely, the chilling of the extremities, by concentrating the warmth in the interior of the body, creates, as it were, a habit or a predisposition towards feverishness; and for a man to divert the substances in his body toward the surface, and to conduct and distribute them, along with the warmth, to all parts of his body, is healthful. Cf. Moralia, 635 C. If therefore we happen to be doing something with our hands and using them, the motion itself brings the warmth to these parts, and keeps it there; but when not engaged in such activities we must by no means allow the cold to find lodgement in our extremities.