Walt Whitman was an American poet, essayist, and journalist born in 1819 in New York. He published several works including Leaves of Grass, a collection of poems focused on transcendentalism and realism that was revised and expanded throughout his life. Whitman was influential for later poets and seen as capturing the spirit of America. He held unconventional religious and sexual views that were debated during his time. Whitman opposed the expansion of slavery in the U.S. and supported abolition in newly conquered territories before his death in 1892.