“During the thousand years that included the careers of the Frankish soldier and the Polish king, the Christians of Asia and Africa proved unable to wage successful war with the Moslem conquerors; and in consequence Christianity practically vanished from the two continents; and today nobody can find in them any "social values" whatever, in the sense in which we use the words, so far as the sphere of Mohammedan influence.
There are such "social values" today in Europe, America, and Australia only because during those thousand years the Christians of Europe possessed the warlike power to do what the Christians of Asia and Africa had failed to do - that is, to beat back the Moslem invader.”
Theodore Roosevelt.
http://thereligionofconquest.com/