If the painful history of the human and Christian striving for God proves anything, it surely proves this: that any attempt to reduce God to the scope of our own comprehension leads to the absurd. We can only speak rightly about him if we renounce the attempt to comprehend and let him be the uncomprehended. Any doctrine of the Trinity, therefore, cannot aim at being a perfect comprehension of God. It is a frontier notice, a discouraging gesture pointing over to unchartable territory. It is not a definition that confines a thing to the pigeonholes of human knowledge, nor is it a concept that would put the thing within the grasp of the human mind.

Auteur: Pope Benedict XVI