But how are you to see into a VIRTUOUS soul and know its loveliness? Withdraw into yourself and look. And if you do not find yourself beautiful yet, act as does the creator of a statue that is to be made beautiful: he cuts away here, he smoothes there, he makes this line lighter, this other purer, until a lovely face has grown upon his work. So do you also: cut away all that is excessive, straighten all that is crooked, bring light to all that is overcast, labour to make all one glow of beauty and never cease chiselling your statue, until there shall shine out on you from it the godlike splendour of virtue, until you shall see the perfect goodness surely established in the stainless shrine. Enneads I,6,9
That one identical soul should be VIRTUOUS in me and vicious in someone else is not strange: it is only saying that an identical thing may be active here and inactive there. Enneads IV,9,2