Irrationality by Stuart Sutherland
Best Non-Fiction (no biographies)
6,264 books — 8,139 voters

Slaughterhouse-Five by Kurt Vonnegut Jr.Mother Night by Kurt Vonnegut Jr.
Vonnegut's Best
37 books — 629 voters
Slaughterhouse-Five by Kurt Vonnegut Jr.
Best Science Fiction & Fantasy Books
8,727 books — 25,604 voters

The Number Devil by Hans Magnus EnzensbergerWhere Were You, Robert? by Hans Magnus EnzensbergerRoverandom by J.R.R. TolkienThe Chronicles of Narnia by C.S. LewisJabberwocky and Other Poems by Lewis Carroll
Best Children's Books
5,377 books — 6,977 voters

To Kill a Mockingbird by Harper LeeThe Hitchhiker’s Guide to the Galaxy by Douglas AdamsSlaughterhouse-Five by Kurt Vonnegut Jr.Mother Night by Kurt Vonnegut Jr.
Books That Everyone Should Read At Least Once
32,551 books — 123,949 voters
Young Stalin by Simon Sebag MontefiorePersian Fire by Tom Holland
Best History Books
3,944 books — 4,162 voters

Norwegian Wood by Haruki MurakamiSlaughterhouse-Five by Kurt Vonnegut Jr.Mother Night by Kurt Vonnegut Jr.The Hitchhiker's Guide to the Galaxy by Douglas Adams
Best Books Ever
78,329 books — 291,983 voters