So it is no wonder that those that have raised in themselves an envious and bewitching habit, if according to the peculiarity of their passion they are carried on to suitable effects; for when they are once moved, they do that which the nature of the thing, not which their will, leads them to.

For as a sphere must necessarily move spherically, and a cylinder cylindrically, according to the difference of their figures; thus his disposition makes an envious man move enviously to all things; and it is likely they should chiefly hurt their most familiar acquaintance and best beloved.

And that fine fellow Eutelidas you mentioned, and the rest that are said to overlook themselves, may be easily and upon good rational grounds accounted for; for, according to Hippocrates, a good habit of body, when at height, is easily perverted, and bodies come to their full maturity do not stand at a stay there, but fall and waste down to the contrary extreme.

And therefore when they are in very good plight, and see themselves look much better than they expected, they gaze and wonder; but then their body being nigh to change, and their habit declining into a worse condition, they overlook themselves.

And this is done when the effluvia are stopped and reflected by the water rather than by any other reflecting body; for this exhales upon them whilst they look upon it, so that the very same particles which would hurt others must hurt themselves.