E. M. Forster 
Where Angels Fear to Tread 

Where Angels Fear to Tread (1905) is a novel by E. M. Forster. The title comes from a line in Alexander Pope’s An Essay on Criticism: "For fools rush in where angels fear to tread". In 1991 it was made into a film by Charles Sturridge, starring Rupert Graves, Giovanni Guidelli, Helen Mirren, Helena Bonham Carter, and Judy Davis. A ten-part radio adaptation of the novel was broadcast on BBC Radio 4. An opera based on the novel by Mark Weiser was premiered at the Peabody Institute of Music in 1999, and received its professional premiere at Opera San Jose in 2015.(Wikipdia)