The Great Library Of Alexandria In Alexandria, Egypt, Was One Of The Largest And Most Significant Libraries Of The Ancient World. The Library Was Part Of A Larger Research Institution Called The Mouseion, Which Was Dedicated To The Muses, The Nine Goddesses Of The Arts.[10] The Burning Of The Library Of Alexandria In Ancient Egypt Ranks Among The Worst Crimes Committed Against Humanity In Known History. Lost Scientific Research Including Physics And Anatomy And Medicine, As Well As Knowledge And Documentation Of Culture And History Is Widely Believed To Have Set Human Civilization Back Significantly. Carl Sagan Himself Stated That The Burning Of The Library Of Alexandria Likely Set Humanity Back 1, 000 Years.