Man is the mirror which God holds up to himself, or the sense organ with which he apprehends his being.
So-called progress makes possible a tremendous multiplication of man and leads simultaneously to a spiritual
inflation and to an unconsciousness of God (genetivus accusativus!).
Man confuses himself with God, is identical with the demiurge and begins to usurp cosmic powers of destruction, i .e., to arrange a second Deluge.
He should become conscious of the tremendous danger of God becoming man, which threatens him with becoming
God, and learn to understand the mysteria Dei better.
In the Catholic Church, faith is not so dangerous in practice.
The Church stands on two feet, Protestantism only on sola fide, therefore faith is so important to it but not to the Catholic.
Sometimes semel credidisse is sufficient for him since he has the ritual graces.
With best greetings,
C.G. Jung Carl Jung, Letters Vol. II, Pages 111-112.