English literature, from the days of the minstrels to the Lake Poets--Chaucer and Spenser and Milton, and even Shakespeare, included--breathes no quite fresh and, in this sense, wild strain. It is an essentially tame and civilized literature, reflecting Greece and Rome. ... Where is the literature which gives expression to Nature? ... I do not know of any poetry to quote which adequately expresses this yearning for the Wild. ... The West is preparing to add its fables to those of the East. The valleys of the Ganges, the Nile, and the Rhine having yielded their crop, it remains to be seen what the valleys of the Amazon, the Plate, the Orinoco, the St. Lawrence, and the Mississippi will produce.