Plato

If there is no One, the others neither are, nor can be imagined to be, one or many. Nor yet, if there is no One, can the others be or appear like or unlike, or the same or different, or in contact or apart, and so on with all the other characters which we have just been saying they appear to have. Thus, in sum, we may conclude, if there is no One, there is nothing at all. (Parmenides)