Did Plato abandon, or sharply modify, the Theory of Forms in later life?In thePhaedo,Symposium, andRepublicit is generally agreed that Plato held that universals exist. But inParmenides, he subjected that theory to criticism. If the criticism were valid, and Plato knew so, then theParmenidesmarks a turning point in his thought.If, however, Plato became aware that there are radical differences in the logical behaviour of concepts, and the later dialogues are a record of his attempt to analyse those differences, then Plato’s thought can be said to have moved in a new and vitally important direction after theParmenides.Studies in Plato’s Metaphysicsbrings together twenty essays by leading philosophers from the UK and the USA reflecting upon this important issue and upon the questions arising from it.