The Holy Spirit brings the living, transfigured Christ into humanity. Thus does Christian interiority arise. This does not mean that one becomes profound in a mental sense: it means the opposite of squandering oneself in what is exterior. It implies that there is a depth in man in which Christ lives. It is possible to live with this Christ. He can become the very content of life. Then the New Man comes into being. The old man is the one he was before, but now the New Man is sown in him. How this happens cannot be described. It can be that certain persons experience this reality so powerfully that they can no longer feel at home in the world. This is how monasticism arose.
Photograph by Brother Brian. Lines from a Sermon by Romano Guardini.