Throughout all these ages this Nobility of which we speak manifests its effects in different ways in the ennobled Soul; and it is that which this part of the Song, concerning which we write at present, intends to demonstrate. Where it is to be known that our good and upright nature makes forward progress in us in the reasoning powers, as we see the nature of the plants make forward progress; and therefore it is that different manners and different deportment are to be held reasonable at one age rather than at another. The ennobled Soul proceeds in due order along a single path, employing each of its powers in its time and season, or even as they are all ordained to the final production of the perfect fruit. And Tullius is in harmony with this in his book On Old Age. And putting aside the figurative sense which Virgil holds in the Æneid concerning this different progress of the ages, and letting that be which Egidius the hermit mentions in the first part On the Government of Princes, and letting that be to which Tullius alludes in his book Of Offices, and following that alone which Reason can see of herself, I say that this first age is the door and the path through which and along which we enter into our good life, And this entrance must of necessity have certain things which the good Nature, which fails not in things necessary, gives to us; as we see that she gives to the vine the leaves for the protection of the fruit, and the little tendrils which enable it to twine round its supports, and thus bind up its weakness, so that it can sustain the weight of its fruit. Beneficent Nature gives, then, to this age four things necessary to the entrance into the City of the Good Life. The first is Obedience, the second Suavity, the third Modesty, the fourth Beauty of the Body, even as the Song says in the first section of this part. It is, then, to be known that like one who has never been in a city, who would not know how to find his way about the streets without instruction from one who is accustomed to them, even so the adolescent who enters into the Wood of Error of this life would not know how to keep to the good path if it were not pointed out to him by his elders. Neither would the instruction avail if he were not obedient to their commands, and therefore at this age obedience is necessary. Here it might be possible for some one to speak thus: Then, is that man to be called obedient who shall follow evil guidance as well as he who shall believe the good? I reply that this would not be obedience, but transgression. For if the King should issue a command in one way and the servant give forth the command in another, it would not be right to obey the servant, for that would be to disobey the King; and thus it would be transgression. And therefore Solomon says, when he intends to correct his son, and this is his first commandment: "Listen, my son, to the instruction of thy father." And then he seeks to remove