"The Cross is the approbation of our existence, not in words, but in an act so completely radical that it caused God to become flesh and pierced this flesh to the quick; that, to God, it was worth the death of his incarnate Son"

This quote by Joseph Ratzinger, who later on ended up being Pope Benedict XVI, is an extensive reflection on the significance of the Christian symbol of the Cross in the context of human presence and divine action. Ratzinger checks out the Cross not simply as a symbol, but as the supreme expression of God's affirmation of human presence.

First of all, Ratzinger explains the Cross as an "approbation of our presence", suggesting that it is a recommendation and recognition of human life. This is not simply a verbal or abstract approval, however rather a deeply rooted, transformative act. It symbolizes that human life deserves living and redeeming; it is valued by God to such an extent that it necessitated a remarkable intervention.

The phrase "so completely radical that it caused God to end up being flesh" speaks with the Christian belief in the Incarnation, where God took on human form in the individual of Jesus Christ. This act is seen as extreme since it breaks the limits of divine and human; God picks to share in human suffering and death. The Incarnation itself is a testament to the immeasurable worth of mankind in the eyes of God.

The notion of the flesh being "pierced to the fast" describes the crucifixion of Christ, a physical manifestation of suffering and sacrifice. Here, Ratzinger stresses that the Cross represents the depth of God's engagement with humanity. It is an act of love that included ultimate sacrifice, highlighting the belief in a God who is thoroughly involved in the human condition, not aloof or indifferent.

Finally, the assertion that "it deserved the death of his incarnate Son" highlights the central Christian concept of redemption through sacrifice. The death of Jesus is portrayed as the supreme act of love and the conclusive procedure of the worth of human existence. For Ratzinger, the Cross is an effective reminder of divine love and the profound value of each human life.