Plato is a much more experimental philosopher, this book argues, than most commentators acknowledge. Supporting this position, Henry Teloh combines exegesis of particular passages with a synoptic view of Plato's philosophical development through his early, middle, and late dialogues. The result is a study of Plato's ideas with a more ambitious scope than any since W. D. Ross's in 1951,The book chronicles Plato's changing interests through a focus on his ontological commitments—that is, on the types of entities he addresses. It (...) also traces many of the assumptions in Plato's thought back to their sources in pre-Socratic philosophy. By depicting the changes in Plato's thought from one period of dialogue composition to another, and by seeking to explain these changes from textual evidence, this book offers an appealing introduction to Plato for all humanists. (shrink)

Since gregory vlastos resurrected "self-predication" there justifiably has been considerable interest in "self-predication," and the interpretation of this notion is crucial for understanding plato's metaphysics. I am in agreement with vlastos in thinking that plato's degrees-of-reality ontology and his conception of forms as paradigms implies "self-predication." Nevertheless, many of plato's "self-predicational" statements (e.g., "the beautiful is beautiful," "justice is just," etc.) Arise, i believe, from a different source. Plato, at times, accepts an anaxagorean account of causation: a cause must have (...) the quality that it produces in something else. I argue that anaxagorean causation lies behind the apparently "self- predicational" statements at "parmenides" 131 c-e, "euthydemus" 301b, "hippias major" 292e, "protagoras" 330 c,e, and "phaedo" 100c. These statements are, i believe, on a par with an ethical motif of the dialogues– that a man (or the demiurge) must have the quality that he produces in another; e.g., Only a just man can make another man just. (shrink)

Aristotle states in Metaphysics Z13 that nothing said universally τῶν ϰαϑόλου λεγομένων is substance, rather the substance of each thing is particular to it. The natural interpretation of this statement is that being said universally is a sufficient condition for not being substance. But this claim is very perplexing since it is the key premiss in the following apparently inconsistent set:Form is substance.Form is universal.Nothing universal or said universally is substance, rather the substance of something is particular ἴδιος to it.

I will describe four major themes in Seeskin's rich essay, which is primarily about Plato's early dialogues. I will then close with some comments on these themes.

Aristotle states in Metaphysics Z13 that nothing said universally τῶν ϰαϑόλου λεγομένων is substance, rather the substance of each thing is particular to it. The natural interpretation of this statement is that being said universally is a sufficient condition for not being substance. But this claim is very perplexing since it is the key premiss in the following apparently inconsistent set:Form is substance.Form is universal.Nothing universal or said universally is substance, rather the substance of something is particular ἴδιος to it.