Irrationality by Stuart Sutherland
Best Non-Fiction (no biographies)
6,417 books — 8,205 voters

Slaughterhouse-Five by Kurt Vonnegut Jr.Mother Night by Kurt Vonnegut Jr.
Vonnegut's Best
37 books — 632 voters
Slaughterhouse-Five by Kurt Vonnegut Jr.
Best Science Fiction & Fantasy Books
8,841 books — 26,102 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
5,433 books — 7,062 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
32,929 books — 124,988 voters
Young Stalin by Simon Sebag MontefiorePersian Fire by Tom Holland
Best History Books
4,088 books — 4,580 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
79,358 books — 295,811 voters