Irrationality by Stuart Sutherland
Best Non-Fiction (no biographies)
6,337 books — 8,175 voters

Slaughterhouse-Five by Kurt Vonnegut Jr.Mother Night by Kurt Vonnegut Jr.
Vonnegut's Best
37 books — 630 voters
Slaughterhouse-Five by Kurt Vonnegut Jr.
Best Science Fiction & Fantasy Books
8,775 books — 25,809 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
5,418 books — 7,028 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
32,843 books — 124,667 voters
Young Stalin by Simon Sebag MontefiorePersian Fire by Tom Holland
Best History Books
4,048 books — 4,629 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
78,993 books — 294,149 voters