Rainer Maria Rilke (1875-1926) was a German poet and prose stylist, often considered the most important German poet of the 20th century.
One of the following works may appear on the GRE Literature exam. Read each linked summary once; read "Der Panther" twice.
1. Letters to a Young Poet
2. The Notebooks of Malte Laurids Brigge (Novel)
3. "Der Panther" (Translation)
Rilke is not worth adding to your GRE reading list.