St Justin Popovich: When man wakes up in the clay of his body...
When man wakes up in the clay of his body and beholds spiritual realities, he senses that material realities are real and his spirit recognizes them as such.
Quickly he comes to the paradoxical realization: man, as a special sort of being, comes to know realities in the material world with the help of the spirit, which does not have the characteristics of material reality, but rather is something that cannot appear materially as an object, or manifest itself as trans-subjective reality, or be touched with the senses.
However, even though the spirit is unintelligible in the form of material reality, nevertheless, by its invisible essence it is the criterion of all the visible realities in the world of matter.
St Justin Popovich