As outspoken in his day as Richard Dawkins or Christopher Hitchens are today, American freethinker and author ROBERT GREEN INGERSOLL (1833-1899) was a notorious radical whose uncompromising views on religion and slavery (they were bad, in his opinion), women's suffrage (a good idea, he believed), and other contentious matters of his era made him a wildly popular orator and critic of 19th-century American culture and public life. Ingersoll published this lecture in 1894, a stirring tribute to the honesty, courage, and genius of a beloved leader at a time when his life and works were still within living memory. Focusing in particular on Lincoln's abhorrence of slavery and his work to defeat it as a national institution, Ingersoll offers readers today an invaluable perspective on the great President from the era immediately after his own, when his legend was being cemented in the American imagination.