6. It is said also that quicksilver, if poured out from the vessel that contains it down a dusty slope, forms small globules and scatters itself over the ground, mingling with none of those bodies with which it meets: but if one should collect at one place the substance dispersed in many directions, it flows back to its kindred substance, if not hindered by anything intervening from mixing with its own kind. Something of the same sort, I think, we ought to understand also of the composite nature of man, that if only the power were given it of God, the proper parts would spontaneously unite with those belonging to them, without any obstruction on their account arising to Him Who reforms their nature.