Book covers can teach us a lot about condensing complex ideas into simple designs that attract consumers and sell products. The best covers manage to give book browsers an idea of the book's plot, tone, themes, and genre, all without revealing too much. 

To inspire your next design project, we've compiled a list of 20 beautifully designed books that beg to be judged by their covers....

Via Jeff Domansky, massimo facchinetti