It is easier to build strong children than to repair broken men. Frederick Douglass (February 1818 – February 20, 1895) was an African-American social reformer, orator, writer, and statesman. After escaping from slavery, he became a leader of the abolitionist movement, gaining note for his dazzling oratory and incisive antislavery writing. He stood as a living counter-example to slaveholders’ arguments that slaves lacked the intellectual capacity to function as independent American citizens. Many Northerners also found it hard to believe that such a great orator had been a slave.
Various sites about his life including this one from the History Channel.