Plato’s Parmenides is widely considered the most enigmatic of the Platonic dialogues, and rightly so. I think that one would do well to approach this dialogue by “reading between the lines” in the Straussian sense. In the dialogue, we encounter a young Socrates engaging with Zeno, at the time already in middle age, and Parmenides, a well-established master of the philosophical art. This seems to suggest, by form alone, that Socrates was not yet mature enough to take on the magisterial Parmenides.
I’d like to focus on the second part, in which Parmenides uses an idiosyncratic method to determine the nature of the One (alternatively, the Idea of Unity). This method consists in considering the consequences if the one is asserted to possess various accidents (being, not-being, motion, non-motion, becoming, perishing…).
While many scholars disagree whether the argument here is ultimately coherent, there is no doubt that it is difficult to follow and yields no obvious conclusions. If we again apply Strauss’s method as suggested, it seems that this dialogue is meant to demonstrate the difficulties in positing Platonic forms. One gets the sense that the reader is meant to thoughtfully consider all the associated problems with the forms and, in the process become better at defending them. It is, like so many of the dialogues, aporetic.
Luckily for us, Parmenides was not Plato’s only statement on the subject. We must consider the dialectic method laid out by Socrates in The Republic (34b3–c5) and, more importantly in Philebus. Consider Socrates’ words at 15c:
We say that one and many are identified by reason, and always, both now and in the past, circulate everywhere in every thought that is uttered. This is no new thing and will never cease; it is, in my opinion, a quality within us which will never die or grow old, and which belongs to reason itself as such.
Later on, Socrates describes the process of differentiation that must take place in order for us to get a sense of the universal:
…we must always assume that there is in every case one idea of everything and must look for it—for we shall find that it is there—and if we get a grasp of this, we must look next for two, if there be two, and if not, for three or some other number; and again we must treat each of those units in the same way, until we can see not only that the original unit is one and many and infinite, but just how many it is. And we must not apply the idea of infinite to plurality until we have a view of its whole number [16e] between infinity and one; then, and not before, we may let each unit of everything pass on unhindered into infinity.”
Gadamer provides some insight into this process in his masterful The Idea of the Good in Platonic – Aristotelian Philosophy. It involves “…the division of a one into a determinate manifold that is itself eidetic-ideal.” (p. 119) Think here of listening to a symphony play a chord and then breaking out all the different notes played by all the different instruments. Further,
“… the art of differentiating only reaches its goal when one finds no more specifiable units- tones, phonemes, [etc.]… Differentiation takes place here within the noetic one, and it is the principle of number that the Philebus introduces in this context as the truly illuminating Promethean fire. Here, the Pythagorean heritage, the identification of being with number is explicated on the new level of noetic being” (p. 120, emphasis added).
This “noetic being,” a new concept of the forms which in other dialogues is asserted to subsist independently of individual objects, is one mode of being as pointed out in the last post. Here, Plato is in agreement with Aristotle. We must also note, that contrary to what we found in Parmenides, the manifold is not infinite in this case.
But most importantly, the key insight has been revealed: the dialectic of differentiation/synthesis is “… a world of signs and indices that directs us to the ideal.” (p. 120) Here Gadamer touches on the dialectically structured meaning, greater than the concrete whole, which one must seek in order to make sense of the problem of universals. Here we have a much better picture of how one engages in this dialectic than that given in The Republic. There is a growth into these kinds of truths that ought to take place. To be sure, dialectic is not constitutive of these truths, rather, it is our mode of access to them.
This growth is an ongoing process, in which the universal is at once unified in the logos of sound dialectical thought and manifold in the decisions we make in the moment of choice.
…the ideal of a life harmonized rightly, is – precisely as a result of dialogue – a logos, which directs us to an ergon (deed), to choosing what is right in the moment of choice. (p. 121)
It’s a process.