Walter Whitman Jr. (May 31, 1819 – March 26, 1892) was an American poet, essayist, and journalist; he also wrote two novels. He is considered one of the most influential poets in American literature and world literature. Whitman incorporated both transcendentalism and realism in his writings and is often called the father of free verse. His work was controversial in his time, particularly his 1855 poetry collection Leaves of Grass, which was described by some as obscene for its overt sensuality.
Whitman was born in Huntington on Long Island and lived in Brooklyn as a child and through much of his career. At age 11, he left formal schooling to go to work. He worked as a journalist, a teacher, and a government clerk. Whitman's major poetry collection, Leaves of Grass, first published in 1855, was financed with his own money and became well known. The work was an attempt to reach out to the common person with an American epic. Whitman continued expanding and revising Leaves of Grass until his death in 1892.
During the American Civil War, he went to Washington, D.C., and worked in hospitals caring for the wounded. His poetry often focused on both loss and healing.