St. Nicholas Cabasilas: How great are the Mysteries!

O how great are the Mysteries [i.e., the Sacraments]! What a thing it is for Christ's mind to be mingled with ours, our will to be blended with His, our body with His Body and our blood with His Blood! What is our mind when the divine mind obtains control? What is our will when that blessed will has overcome it? What is our dust when it has been overpowered by His fire?
That these things are so Paul shows when he claims that he has neither his own mind nor will nor life, but that all these have become Christ's for him. He states, "we have the mind of Christ" (2 Cor 2:16), and "you desire proof that Christ is speaking in me" (2 Cor 13:3), and "I yearn for you all with the affection of Christ Jesus" (Phil 1:18). From this it is clear that he has the same will as Christ. To sum it all up, "it is no longer I who live, but Christ lives in me" (Gal 2:20).
+ St. Nicholas Cabasilas, from The Life in Christ, fourth book, #2