There is one Professor of Theology we should and must pay close attention to. He is far beyond any other and judges all others. But still, He brings us great comfort, so much that we long to hear even more. He gives us a better witness about the Father and Son than we could ever find from other professors.
If you admit it, He is the one who first brought you to faith. He is the Holy Spirit at work in the Word of God. He is so good that we never tire of His teaching and long to grow in our understanding of the Gospel of Christ.
Source: fifty years of studying Luther and the Scriptures.