Suspiria de Profundis

Among De Quincey's papers, left after his death in 1859, was discovered a list of 32 items that would have comprised the complete Suspiria, if the work had ever been finished.

[4] This master list counts The English Mail-Coach, first published in Blackwood's in October and December 1849, as one of the Suspiria, though critics and scholars universally treat it as a separate work.

"The whole of this vision is clothed in a prose so stately, intense, and musical that it has been regarded by some...as the supreme achievement of De Quincey's genius, the most original thing he ever wrote.

[8] In 1860, Charles Baudelaire, inspired by Suspiria de Profundis and the Confessions, penned the first part of his essay Les paradis artificiels about hashish and opium and their effect on a poet's work.

The second segment, entitled "Un mangeur d'Opium", is a translation to French of De Quincey's Confessions, with Baudelaire occasionally adding his own impressions.