The Marriage of Heaven and Hell is probably the most influential of Blake's works. Its vision of a dynamic relationship between a stable 'Heaven' and a dynamic 'Hell' has fascinated theologians, aestheticians and psychologists. It has also inspired many artists and musicians.
It was composed between 1790 and 1793, in the period of radical ferment immediately after the French Revolution.
The book describes the poet's visit to Hell, a device adapted by Blake from Dante's Inferno and Milton's Paradise Lost. However, Blake's conception of Hell is not as a place of punishment, but as a source of unrepressed energy. Blake's purpose is to create what he called a "memorable fancy" in order to reveal to his readers the repressive nature of conventional morality and institutional religion.
In the most famous part of the book, Blake reveals the Proverbs of Hell. These display a very different kind of wisdom from the Biblical Book of Proverbs. The diabolical proverbs are provocative and paradoxical. Their purpose is to energise thought. Several of Blake's proverbs have become famous:
The book ends with a series of revolutionary prophesies and exhorations.
Blake's text has been interpreted in many ways. It certainly forms part of the revolutionary culture of the period. The references to the printing house suggest the underground radical printers producing revolutionary pamphlets at the time. Ink-blackened print workers were jokingly referred to as "printing devils," and revolutionary publications were regularly denounced from the pulpits as the work of the devil.
In contrast, the book has been interpreted as an anticipation of Freudian and Jungian models of the mind, illustrating a struggle between a repressive superego and an amoral id. It has also beeen interpreted as an anticipation of Nietzsche's theories about the difference between slave morality and master morality.