Just imagine what we lost when the idiot Christians burned the Library of Alexandria. Just imagine how much was lost in ideas because if stupid laws or traditions in a certain islam bible. Just imagine how many scientists were killed in early society in general because their ideas or understanding was greater than some monarch, and we cant have that! Humanity has gone out of it's way to destroy knowledge in the name of hating change. Organized political Religion (Catholic church, Radical Islam, Moonies, David Koresh, Church of the Latter Day saints, Scientology, etc....) is simply a powerful tool to help spread hate and control. None of these religions have ANY use other than to keep certain people in power and rich at the expense of others. Knowledge levels the playing field, therefore heads of powerful organizations go out of their way to SQUASH knowledge as it threatens their power and might. Not all religion does this, but the ones that have a few that benefit greatly over the control of a large group of followers does.
[CITATION NEEDED] Just so you know, your understanding of history has no basis in reality. Spend some time reading, or at least on google. http://en.wikipedia.org/wiki/Library_of_Alexandria#Destruction