t was that in England the dominant religious
sentiment came to be enlisted on the side of political freedom.
[Illustration: Had it not been for the Puritans, political liberty would
probably have disappeared from the world]

In such an inquiry we have nothing to do with the truth or falsity of
any system of doctrines, whether Catholic or Protestant. The legitimate
purposes of the historian do not require him to intrude upon the
province of the theologian. Our business is to trace the sequence of
political cause and effect. Nor shall we get much help from crude
sweeping statements which set forth Catholicism as invariably the enemy
and Protestantism as invariably the ally of human liberty. The Catholic
has a right to be offended at statements which would involve a
Hildebrand or a St. Francis in the same historical judgment with a
Sigismund or a Torquemada. The character of ecclesiastical as of all
other institutions has varied with the character of the men who have
worked them and the varying needs of the times and places in which they
have been worked; and our intense feeling of the gratitude we owe to
English Puritanism need in nowise diminish the enthusiasm with which we
praise the glorious work of the mediaeval church. It is the duty of
the historian to learn how to limit and qualify his words of blame or
approval; for so curiously is human nature compounded of strength and
weakness that the best of human institutions are likely to be infected
with some germs of vice or folly. [Sidenote: Beginnings of Protestantism
in the thirteenth century]

Of no human institution is this more true than of the great medieval
church of Gregory and Innocent when viewed in the light of its claims
to unlimited temporal and spiritual sovereignty. In striking down the
headship of the emperors, it would have reduced Europe to a sort of
Oriental caliphate, had it not been checked by the rising spirit of
nationality already referred to. But there was another and even mightier
agency coming in to curb its undue pretensions to absolute sovereignty.
That same thirteenth century which witnessed the culmination of its
power witnessed also the first bold and determined manifestation of the
Protestant temper of revolt against spiritual despotism. It was long
before this that the earliest Protestant heresy had percolated into
Europe, having its source, like so many other heresies, in that eastern
world where the stimulating thought of the Greeks b