After putting together the world, the deity planned the creation of living beings, subject to death, so that, himself being perfect, he might perfectly work it out according to his image. Therefore he mixed up the soul of man out of the same proportions and powers, and after taking the particles and distributing them, he delivered them? over to Nature, whose office is to effect change. She then took up the task of working out mortal and ephemeral living beings, whose souls ware drawn in from different sources, some from the Moon, others from the Sun, and others from various planets, that cycle within the Difference, -- with the exception of one single power which was derived from Sameness, which she mixed up in the rational portion of the soul, as the image of wisdom in those of a happy fate.
Now of the soul of man one portion is rational and intellectual; and another irrational and unintellectual. Of the logical part, the best portion is derived from Sameness, while the worse comes from Difference; and each is situated around the head, so that the other portions of the soul and body may minister to it, as the uppermost of the whole tabernacle. Of the irrational portion, that which represents passion hangs around the heart, while desire inhabits the liver. The principle of the body, and root of the marrow is the brain, wherein inheres leadership; and from this, like an effusion, through the back-bone flows what remains, from which are separated the particles for seed and reason; while the marrow's surrounding defences are the bones, of which the flesh is the covering and concealment. To the nerves he united joints by ligatures, suitable for their movement. Of the internal organs, some exist for the sake of nourishment, and others for safety; of communications, some convey outside movements to the interior intelligent places of perception, while others, not falling under the power of apprehension, are unperceived, either because the affected bodies are too earthlike, or because the movements are too feeble; the painful movements tend to arouse Nature, while the pleasurable lull Nature into remaining within itself.