As a young man Frederick Douglass (1818–1895) escaped from slavery in Baltimore, Maryland. He was fortunate to have been taught to read by his slave owner mistress, and he would go on to become one of the major literary figures of his time. His very existence gave the lie to slave owners: with dignity and great intelligence he bore witness to the brutality of slavery. Initially mentored by William Lloyd Garrison, Douglass spoke widely, using his own story to condemn slavery. By the Civil War, Douglass had become the most famed and widely travelled orator in the nation. In his unique and eloquent voice, written and spoken, Douglass was a fierce critic of the United States as well as a radical patriot. After the war he sometimes argued politically with younger African Americans, but he never forsook either the Republican party or the cause of black civil and political rights.