Irrationality by Stuart Sutherland
Best Non-Fiction (no biographies)
6,528 books — 8,243 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
8,907 books — 26,251 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
5,592 books — 7,095 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
33,218 books — 125,851 voters
Young Stalin by Simon Sebag MontefiorePersian Fire by Tom Holland
Best History Books
4,143 books — 4,780 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
80,044 books — 298,056 voters