[TNO]

If the Muslims didn't burn down the library of Alexandria I wonder if the Renaissance wouldn't have come much sooner.

[paradoja]

The library was probably burnt more than once, and there's no proof that the Muslims did it the last time. http://en.wikipedia.org/wiki/Library_of_Alexandria#Arabic_so...

[TNO]

"the last time".

You're right to infer that the Christians did their fair share of burning as well, if not more so in this case.