[24] Such a divine spirit, too, is that of Moses, which visits the seventy elders that they may excel others and be brought to something better—those seventy who cannot be in real truth even elders, if they have not received a portion of that spirit of perfect wisdom. For it is written, “I will take of the spirit that is on thee and lay it upon the seventy elders” (Numb. 11:17).
[25] But think not that this taking of the spirit comes to pass as when men cut away a piece and sever it. Rather it is, as when they take fire from fire, for though the fire should kindle a thousand torches, it is still as it was and is diminished not a whit. Of such a sort also is the nature of knowledge. All those who resort to it and become its disciples, it makes into men of skill, yet no part of it is diminished. Nay, often knowledge improves thereby, just as springs (so they say) when we draw water from them.
[26] For when this is done, it is thought that the spring becomes sweeter. So the giving of instruction to others, constantly repeated, entails study and practice to the instructor and thus works the perfect consummation of knowledge. If, then, it were Moses’
[27] own spirit, or the spirit of some other created being, which was according to God’s purpose to be distributed to that great number of disciples, it would indeed be shredded into so many pieces and thus lessened. But as it is, the spirit which is on him is the wise, the divine, the excellent spirit, susceptible of neither severance nor division, diffused in its fullness everywhere and through all things, the spirit which helps, but suffers no hurt, which though it be shared with others or added to others suffers no diminution in understanding and knowledge and wisdom.