Abstract
A systematic inquire on Plato get out as systematic interpretation and only possible that the being is put against to not being; that being (that that is) take together the being itself and immutable (that is refereed in confusing mode as true being) and the physics world or being of chance, that is being itself as chance (being that is in process of becoming to being) as being for somebody by making apparent from sense. The Forms-‐‑Ideas is defined as what is formal (structural) or intelligible in opposition to material and mutable, and as what can explain the physic word of chance, the relative regularity in this (particular and mortal shapes) and it character (constant chance or transformation). The knowledge is of Forms-‐‑ Ideas, and the justice shall be and human virtue, that that give the good to each thing that coexist together others; the virtue that make possible the virtue of each. This is the what is-‐‑essence of virtue. What is itself and always equal conform to the same.
References
Platón (2009). La República. Akal de Bolsillo, Madrid. Platón (2008). Menón. Editorial Gredos, Madrid.
Platón (1988). Fedro. Editorial Gredos, Madrid.
Platón (2006). Teeteto. Editorial Gredos, Madrid. Aristóteles (2006). Metafísica. Editorial Gredos, Madrid.

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