How could the Entities ever be mingled?

For the light (thing) must dwell above just as the heavy (thing) dwells beneath all. Therefore, Fire cannot exist in the same rank in which Light exists, nor can Water, which is heavy, be in the rank of Fire, or of Wind, because there is no force to support them. . . . Water puts an end to Fire, which is opposite it. For [L. 29.] heaviness and weight cannot exist in one rank just as they cannot [L. 39.] . . . by the same weight . . . things which are light and heavy in the midst of Water or in Air. These things convince concerning themselves how (far) the heavy approach the light. And if these which are heavier by measure than their companions, do greatly flee towards the depths, how much more distant from those things [P. 54.] which are beneath, without weight and without measure, will the Darkness be which exists more heavily than all! For lo, all its heaviness, too, is beneath all ... [how did the Darkness] go up from them because its heaviness. . . . But if it is able to exist [L. 16.] and be quiet, let them tell us what thing it was which came upon its heaviness (?) . . . for it is unable to be raised by itself. . . . [Ll. 12, 22.] But if they say that it crossed its boundary and when it crossed [L. 34.] it, it crossed it in an upward direction, then (let me ask), which is easier -- for a heavy thing to go upwards, which is not natural, or to be sent downwards according to its nature? For so [L. 46.] . . . [owing to some cause or other] to cross its boundary and make an Assault upwards. Above all [the proper nature of its [P. 55.] (i.e., of the Darkness) heaviness, demands that it] should be continually sent beneath. And because from of old and from eternity everything was actually going down and down the Fire would not be able [to find its way down through the great [lvi] distance to the Darkness beneath or to reach] the Depths which are immeasurable.