Irrationality by Stuart Sutherland
Best Non-Fiction (no biographies)
6,239 books — 8,068 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
8,524 books — 24,806 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
5,321 books — 6,716 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
31,847 books — 121,048 voters
Young Stalin by Simon Sebag MontefiorePersian Fire by Tom Holland
Best History Books
3,726 books — 3,769 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
76,758 books — 285,598 voters