What is a book with a black cover in 4 words

The Book of Disquiet. Fernando . Pessoa has such a translated, black-covered book, The Book of Disquiet. The Book of Disquiet (a.k.a. The Book of Trepidation) is one of Fernando Pessoa's masterpieces and a long lost classic in the Chinese language market. It is a long lost work, mostly in the form of "faux-diary" fragments, collected and organized by numerous research experts.