Despite the burgeoning literature on Karl Barth, his doctrine of the Holy Spirit continues to be under-appreciated by his friends and critics alike. Yet, while Barth's commitment to the doctrine of the procession of the Holy Spirit from the Father and the Son (Filioque) is well-known, many scholars dismiss his stand as ecumenically untenable and few have bothered to subject his stance on the Filioque to close theological analysis. For those interested...