With this there are fineness and heat and light and softness and brightness; and with the dense are classed cold and darkness and hardness and weight, for these are separated the ones on one side, the others on the other. (_b_) PASSAGES RELATING TO PARMENIDES IN PLATO AND ARISTOTLE. Plato, _Theaet._ 180 D. I almost forgot, Theodoros, that there were others who asserted opinions the very opposite of these: ‘the all is alone, unmoved; to this all names apply,’ and the other emphatic statements in opposition to those referred to, which the school of Melissos and Parmenides make, to the effect that all things are one, and that the all stands itself in itself, not having space in which it is moved. _Ibid._ 183 E. Feeling ashamed before Melissos and the rest who assert that the all is one being, for fear we should examine the matter somewhat crudely, I am even more ashamed in view of the fact that Parmenides is one of them. Parmenides seems to me, in the words of Homer, a man to be reverenced and at the same time feared. For when I was a mere youth and he a very old man, I conversed with him, and he seemed to me to have an exceedingly wonderful depth of mind. I fear lest we may not understand what he said, and that we may fail still more to understand his thoughts in saying it; and, what is most important, I fear lest the question before us should fail to receive due consideration....[60] _Soph._ 238 C (concluding a discussion of Parmenides). You understand then that it is really impossible to speak of not-being or to say anything about it or to conceive it by itself, but it is inconceivable, not to be spoken of or mentioned, and irrational. _Parm._ 150 E. Accordingly the unity itself in relation to itself is as follows: Having in itself neither greatness nor littleness, it could not be exceeded by itself nor could it exceed itself, but being equal it would be equal to itself. _Ibid._ 168 C. This statement: It does not exist, means absolutely that it does not exist anywhere in any way, nor does not-being have any share at all in being. Accordingly not-being could not exist, nor in any other way could it have a share in being. (_Symp._ 178 B, 195 C: Reference to the stories which Hesiod and Parmenides told about the gods. Line 132 is quoted.) Arist. _Phys._ i. 2; 184 b 16. The first principle must be one, unmoved, as Parmenides and Melissos say, ...