Walter Whitman (May 31, 1819 - March 26, 1892) was an American poet, essayist, journalist, and humanist. Proclaimed the "greatest of all American poets" by many foreign observers a mere four years after his death, he is viewed as the first urban poet. He was a part of the transition between Transcendentalism and Realism, incorporating both views in his works. His works have been translated into more than twenty-five languages. Whitman is among the most influential and controversial poets in the American canon. His work has been described as a "rude shock" and "the most audacious and debatable contribution yet made to American literature."