While most poets use some degree of metaphor in their works, William Shakespeare, Walt Whitman and Emily Dickinson are widely recognizable examples. An example of such metaphor usage is Dickinson's "Hope," in which she compares hope to a small bird.
William Shakespeare is world-famous for his metaphoric prose, and the sonnet "Shall I Compare Thee To A Summer's Day?" is one of his most notable uses of metaphor. The American poet Walt Whitman is also famous for his extended metaphor poem "Oh Captain! My Captain!" and others in his "Leaves of Grass" collection. Whitman chose to use the metaphor of a ship's captain in "Oh Captain! My Captain!" to express his grief after the assassination of president Abraham Lincoln.