First published fifty years after the author's death, "The Book of Disquiet" is a unique collection of aphoristic statements that make up the autobiography of Bernardo Soares, an assistant bookkeeper in the city of Lisbon. He is one of the alternative personas of Fernando Pessoa (1888-1935). This "autobiography without facts" represents the poet's prose or poetry in prose, deeply lyrical reflections of a philosopher, and verbal painting by an artist who sees the very essence of things through a transparent surface.

"The Book of Disquiet" is designed to hypnotize the reader and lead them into the very heart of that "disquiet," that longing-yearning, which permeates all of Pessoa's works.