(4) For some they have borrowed, and others they have misunderstood. And in the case of others, what they have spoken, in consequence of being moved, they have not yet perfectly worked out; and others by human conjecture and reasoning, in which also they stumble. And they think that they have hit the truth perfectly; but as we understand them, only partially. They know, then, nothing more than this world. And it is just like geometry, which treats of measures and magnitudes and forms, by delineation on plane-surfaces; and just as painting appears to take in the whole field of view in the scenes represented. But it gives a false description of the view, according to the rules of the art, employing the signs that result from the incidents of the lines of vision. By this means, the higher and lower points in the view, and those between, are preserved; and some objects seem to appear in the foreground, and others in the background, and others to appear in some other way, on the smooth and level surface. So also the philosophers copy the truth, after the manner of painting. And always in the case of each one of them, their self-love is the cause of all their mistakes.

(45) Timaeus: and bound within it organs for all the forethought of the Soul; and they ordained that this, which is the natural front, should be the leading part. And of the organs they constructed first light-bearing eyes, and these they fixed in the face for the reason following. They contrived that all such fire as had the property not of burning but of giving a mild light should form a body akin to the light of every day. For they caused the pure fire within us, which is akin to that of day, to flow through the eyes in a smooth and dense stream;

(5) And then in manner of the little flame, Which followeth the fire where'er it shifts, After the spirit followeth its new form. Since afterwards it takes from this its semblance, It is called shade; and thence it organizes Thereafter every sense, even to the sight. Thence is it that we speak, and thence we laugh; Thence is it that we form the tears and sighs, That on the mountain thou mayhap hast heard. According as impress us our desires And other affections, so the shade is shaped, And this is cause of what thou wonderest at." And now unto the last of all the circles Had we arrived, and to the right hand turned, And were attentive to another care. There the embankment shoots forth flames of fire, And upward doth the cornice breathe a blast That drives them back, and from itself sequesters. Hence we must needs go on the open side, And one by one; and I did fear the fire On this side, and on that the falling down. My Leader said: "Along this place one ought To keep upon the eyes a tightened rein, Seeing that one so easily might err."

(107) Rightly therefore Plato "accustoms the best natures to attain to that study which formerly we said was the highest, both to see the good and to accomplish that ascent. And this, as appears, is not the throwing of the potsherds; but the turning round of the soul from a nocturnal day to that which is a true return to that which really is, which we shall assert to be the true philosophy." Such as are partakers of this he judges to belong to the golden race, when he says: "Ye are all brethren; and those who are of the golden race are most capable of judging most accurately in every respect."