His novitiate was marked by a fervour of humility.
Later political fervour has grouped him with the author of the Wallace, and treated the unequal pair as the singers of a militant patriotism.
This was the central theme of Ritter's philosophy; his religion and his geography were one, and the consequent fervour with which he pursued his mission goes far to account for the immense influence he acquired in Germany.
The same doctrines were preached with more of churchly fervour by Maximus the Confessor (580-622).
The fervour of his political convictions effected a change in the style and tenor of his verse.