Most of them said: To Kill A Mockingbird.
It's a wonderful book! A touching book! And inspiring book! Enough exclamation points? It's a well written book too... but the most important book? I don't know about that. In fact, there are a number of other books in the full list that I believe ought to place above Mockingbird, and here they are...
- The Bible
- The Lord of the Rings
- A Christmas Carol (because of what Dickens accomplished by writing it)
- Winnie the Pooh (no kidding)
All of these books did much to shape the times in which they were written (except for maybe LOTR, I just like that one), and they remain influential today.
There are probably other books on the list that I should have noted (as well as some unaccountable absences), but I haven't read some of them.
And I never heard of "All Quite On the Western Front"... I should make quite a point of checking that one out.