[Footnote 18: In the Hungarian crusade, Spondanus (Annal.
Eccles. A.D. 1443, 1444) has been my leading guide. He has
diligently read, and critically compared, the Greek and
Turkish materials, the historians of Hungary, Poland, and
the West. His narrative is perspicuous and where he can be
free from a religious bias, the judgment of Spondanus is not
contemptible.]