There's a section in the Parmenides which addresses this particular idea, though as a part of a larger argument on the nature of the one. Later platonist / neop

There's a section in the Parmenides which addresses this particular idea, though as a part of a larger argument on the nature of the one. Later platonist / neoplatonist thinkers also occasionally had similar notions. It would be incorrect to say that this idea is absent from platonism.