Arist. _de Gen. Corr._ Β, 6. 333 b 21 (R. P. 168 e); _Met._ Β, 4. 1000 a 29 (R. P. 166 i). Cf. Simpl. _Phys._ p. 1124, 1 (R. P. 167 b). In other places Aristotle speaks of it as “the One.” Cf. _de Gen. Corr._ Α, 1. 315 a 7 (R. P. 168 e); _Met._ Β, 4. 1000 a 29 (R. P. 166 i); Α, 4. 985 a 28 (R. P. _ib._). This, however, involves a slight Aristotelian “development.” It is not quite the same thing to say, as Empedokles does, that all things come together “into one,” and to say that they come together “into the One.” The latter expression suggests that they lose their distinct and proper character in the Sphere, and thus become something like Aristotle’s own “matter.” As has been pointed out (p. 265, _n._ 586), it is hard for Aristotle to grasp the conception of irreducible elements; but there can be no doubt that in the Sphere, as in their separation, the elements remain “what they are” for Empedokles. As Aristotle also knows quite well, the Sphere is a mixture. Compare the difficulties about the “One” of Anaximander discussed in Chap. I. § 15. Footnote 602: This accounts for Aristotle’s statement, which he makes once positively (_Met._ Β, 1. 996 a 7) and once very doubtfully (_Met._ Γ, 4. 1001 a 12), that Love was the substratum of the One in just the same sense as the Fire of Herakleitos, the Air of Anaximenes, or the Water of Thales. He thinks that all the elements become merged in Love, and so lose their identity. In this case, it is in Love he recognises his own “matter.” At the appointed time, Strife begins to enter into the Sphere and Love to go out of it (frs. 30, 31). The fragments by themselves throw little light on this; but Aetios and the Plutarchean _Stromateis_ have between them preserved a very fair tradition of what Theophrastos said on the point. Empedokles held that Air was first separated out and secondly Fire. Next came Earth, from which, highly compressed as it was by the impetus of its revolution, Water gushed forth. From the water Mist was produced by evaporation. The heavens were formed out of the Air and the sun out of the Fire, while terrestrial things were condensed from the other elements. Aet. ii. 6. 3 (_Dox._ p. 334; R. P. 170). Empedokles held that the Air when separated off from the original mixture of the elements was spread round in a circle. After the Air, Fire running outwards, and not finding any other place, ran up under the solid that surrounded the Air.[603] There were two hemispheres revolving round the earth, the one altogether composed of fire, the other of a mixture of air and a little fire. The latter he supposed to be the Night. The origin of their motion he derived from the fact of fire preponderating in one hemisphere owing to its accumulation there. Ps.-Plut. _Strom._ fr. 10 (_Dox._ p. 582; R. P. 170 a). Footnote 603: