How important were Sioux authors such as Charles Eastman in the opinion of the writer responsible for Black Elk Speaks ? What will be the legacy of modern poetry according to the poet behind The Cycle of the West ? Knowledge and Opinion offers an unparalleled glimpse into the social and literary thought of John G. Neihardt (1881-1973), one of America's most celebrated poets and authors. A wealth of little-known essays and reviews deepen and round...