Delirium: The Art of the Symbolist Book, opening January 20 at the Morgan Library & Museum, explores creative encounters between Symbolist authors and the artists in their circles. The movement coalesced during the second half of the nineteenth century as writers in France and Belgium sought a new form of art—one that referenced the visible world as symbols that correlate to ideas and states of mind. The Symbolists celebrated subjectivity, expressed through a nuanced language of reverie, delirium, mysticism, and ecstasy. For these writers, literature suggests meaning rather than defines it.