  This is the first passage in the dialogues widely agreed to introduce Forms. First, Forms are marked as auto kath auto beings, beings that are what they are in virtue of themselves. In subsequent arguments we learn other features of these Forms. From the next argument concerning Recollection (see §11), Forms are said to be perfect and what particulars strive to be like but fall short of. Then in the Affinity Argument we discover that Forms are simple or incomposite, of one form (monoeidetic), whereas particulars are complex, divisible and of many forms. In the crucial Final Argument, Plato finally presents the hypothesis of Forms to explain coming into being and destruction, in general, i.e., change. Once Cebes accepts the hypothesis, a novel implication is announced (100c3–7):