The Exegesis includes details of visionary experiences he says he had
The journals of sci-fi author Philip K Dick will be published next year.
The Exegesis, much anticipated by fans of the writer, will come out in autumn 2011, publisher Houghton Mifflin Harcourt revealed.
Dick, who died in 1982 at the age of 53, had 44 novels published. His first was Solar Lottery in 1955.
He is best known for works including The Man in the High Castle and Do Androids Dream of Electric Sheep? - the basis of 1982 film Blade Runner.
Other films based on Dick's books include Total Recall and Minority Report.
Dick's journals include descriptions of a series of "visions and auditions" he says he experienced.