is with Savonarola, not with Luther.

Catherine confronted a humanity at enmity with itself, a Church conformed
to the image of this world. Her external policy proved helpless to right
these evils. The return of the Popes from Avignon resulted neither in the
pacification of Christendom nor in the reform of the Church. The Great
Schism, of which she saw the beginning, undermined the idea of Christian
unity till the thought of the Saint of Siena was in natural sequence
followed by the thought of Luther. Outwardly her life was spent in
labouring for a hopeless cause, discredited by the subsequent movement of
history. But the material tragedy was a spiritual triumph, not only
through the victory of faith in her own soul, but through the value of the
witness which she bore. Neither of the great conceptions of unity which
possessed the middle ages was identical with the modern democratic
conception; yet both, and in particular that of the Church, pointed in
this direction. That ideal of world-embracing brotherhood to which men
have been slowly awakening throughout the Christian centuries was the
dominant ideal of Catherine's mind. She hoped for the attainment of such a
brotherhood through the instrument of an organized Christendom, reduced to
peace and unity under one God-appointed Head. History, as some of us
think, has rejected the noble dream. We seem to see that the undying hope
of the human spirit--a society shaped by justice and love--is never likely
to be gained along the lines of the centralization of ecclesiastical
power. But if our idea of the means has changed, the same end still shines
before us. The vision of human fellowship in the Name of Christ, for which
Catherine lived and died, remains the one hope for the healing of the
nations.