Selected Essays of Plutarch, Vol. II.

part in the causation? I think not! There [Sidenote: D] are those who

criticize the properties of medical appliances; they do not overthrow the art of Medicine. As, for the matter of that, Plato[197] in proving that we see by means of the flash of our eyes mingling with that of the sun, and hear by the pulsations of the air, did not rule out the fact that we have received our sight ...