The Leipsic discussion produced results still more important, in as much as the theologian of the Reformation then received his call. Modest and silent, Melancthon had been present at the discussion almost without taking any part in it. Till then his attention had been engrossed by literature, but the discussion gave him a new impulse, and gained him over to theology. Henceforth his science did homage to the word of God. He received the evangelical truth with the simplicity of a child. His audience heard him expound the doctrines of salvation with a grace and clearness by which all were charmed. He boldly advanced in this, which was to him a new career; "for," said he, "Christ will never leave his people."[133] From this moment the two friends walked side by side, contending for liberty and truth, the one with the energy of St. Paul, and the other with the meekness of St. John. Luther has admirably expressed the difference of their calling:--"I was born," said he, "to enter the field of battle, and contend with factions and demons. Hence, my writings breathe war and tempest. I must root up the trunks, remove the thorns and the brambles, and fill up the marshes and pools. I am the sturdy wood-cutter who must clear the passage and level the ground; but master Philip advances calmly and softly; he digs and plants, sows, and waters joyously, in accordance with the gifts which God has, with so liberal a hand, bestowed upon him."[134] [133] Christus suis non deerit. (Corp. Reform. i, 104.) [134] L. Op. (W.) xiv, 200. [Sidenote: LUTHER'S EMANCIPATION.]