The New York Public Library compiled a list of the 25 books that its librarians claim have had the biggest effect on the course of history. From fiction and history, to science and religion, the following works have left their mark on the world and stood the test of time. The books on this list are widely accepted by historians as works that helped to shape society, alter social practices, and capture or explain pivotal moments in human history. What is your opinion? Which books have had the biggest effect on human history?