4. If, then, the perfect life is within human reach, the man attaining it attains happiness: if not, happiness must be made over to the gods, for the perfect life is for them alone.
But since we hold that happiness is for human beings too, we must consider what this perfect life is. The matter may be stated thus:
It has been shown elsewhere that man, when he commands not merely the life of sensation but also Reason and Authentic Intellection, has realised the perfect life.
But are we to picture this kind of life as something foreign imported into his nature?
No: there exists no single human being that does not either potentially or effectively possess this thing which we hold to constitute happiness.
But are we to think of man as including this form of life, the perfect, after the manner of a partial constituent of his entire nature?
We say, rather, that while in some men it is present as a mere portion of their total being — in those, namely, that have it potentially — there is, too, the man, already in possession of true felicity, who is this perfection realized, who has passed over into actual identification with it. All else is now mere clothing about the man, not to be called part of him since it lies about him unsought, not his because not appropriated to himself by any act of the will.