  The rigid separation of Forms from sensible particulars, Plato's idea that there are ‘Two Worlds’, is embodied in Plato's isolation of the two ways of being, Being and Partaking. The criteria and the properties which differentiate Forms and particulars are related to their respective ways of being, but mutability, extendedness, etc., are not equivalent to Partaking and they do not explain it nor are they explained by it. Still, the deficiency of the sensible is aptly viewed in terms of its way of being, i.e., in virtue of the fact that every sensible acquires all of its properties through participation. The deficiency of the sensible is its deficient way of being. Lacking any essence, it can only fail to Be.