McBoyne-Christianity was an intolerant and ignorant tyranny imposed by the sword for the majority of its lifetime. The Crusades were a political land-grab, nothing more. How else do you explain "Kill them all, and let God sort them out?" The fact is that Islam's inventions and preservation of information that the Christians destroyed in Europe were responsible for the Renaissance. The current state of Islam should no more be taken as its natural state than the state of the Catholic Church in the 14th century should be considered the standard of all Christian religions.