It is some fundamental certainty which a noble soul has about itself, something which is not to be sought, is not to be found, and perhaps, also, is not to be lost. The noble soul has reverence for itself.
I was unhappy and so is every soul unhappy which is tied to its love for mortal things; when it loses them, it is torn in pieces, and it is then that it comes to realize the unhappiness which was there even before it lost them.
The attainment of truth is then the function of both the intellectual parts of the soul. Therefore their respective virtues are those dispositions which will best qualify them to attain truth.