On another side, the Emperor was insisting that Rome should forward his designs towards a peaceable recovery of the German Protestants. Accordingly, the Pope despatched Giovanni Morone (not yet a cardinal) as nuncio to Hagenau and Worms in 1540; and in 1541 Cardinal Gasparo Contarini took part in the adjustment proceedings at the Conference of Regensburg. It was Contarini who proposed the famous formula "by faith alone are we justified," which did not, however, supersede the Roman Catholic doctrine of good works. At Rome, this definition was rejected in the consistory of 27 May, and Luther declared that he could accept it only provided the opposers would admit that this formula constituted a change of doctrine.