It means that the deeper reality in life is the spiritual, and that the spiritual develops through the natural in its own particular way.

And this particular way is not a mere development but a _self_-development.

The aim of the spiritual is to develop its own self through the human being.
In this way man is given the possibility of developing a self--a personality in a very real sense.
Thus we arrive at some idea of the relation there exists between the spiritual and the natural, and of the place of the spiritual and the natural in man.

The spiritual is neither the product nor an attribute of the natural.

Man is the border creature of the two worlds; he represents the ultimate possibility of the one, and possesses potentialities in regard to the other.