on sola fide

Sola fide is, of course, a singularly useless slogan, since few Protestants could actually understand the difference between Luther and Aquinas if confronted with it at the popular level. Granted, most Protestants don't follow Luther and they attack only straw men. Luther's big and substantial change from the Scholastics was, to quote another if his slogans, "Where they say love, we say faith." That is to say, in both of their mystical theologies. But dialogue with Protestants never reaches the level of mystical theology, perhaps rightly so. Thomists have Juan de la Cruz as the grand test of theirs, but Luther has nobody in his tradition.