In his monumental work, Das Kapital, Karl Marx (1818-1883) tried to show that capitalism was both inefficient and immoral. His key to explaining capitalism is his labor theory of value, which he developed from ideas of Adam Smith and David Ricardo.

Marx argued that all profit, rent, and interest are "surplus-value", obtained by paying workers less than the value of their products. He maintained that the living conditions of the workers always tend to deteriorate, that competition automatically creates monopoly, and that the business cycle demonstrates the wastefulness of capitalism.

In the world of opera, nobody has replaced Maria Callas, and it's doubtful that anyone ever will. Even before her death in 1977, Maria Callas was a subject of controversy and never-ending fascination, a legend who will never be forgotten. Callas: The Voice, The Story is a comprehensive and sympathetic four-hour portrait in sound of the great soprano's life and career. Drawn from interviews with Callas, her life is told from her first inauspicious public appearance as an 11-year old on a radio program, to her years as a glamorous international diva, and finally, the last act in which she lost her voice, the man she loved, and life itself.

Commentaries and reminiscences by Rudolf Bing, Giuseppe di Stefano, Nicola Rescigno, Renata Tebaldi, Franco Zefferelli, and, of course, Maria Callas herself, are interspersed with excerpts from a rich selection of Callas' most memorable live performances. The result is a remarkably frank and heartbreaking portrait of an extraordinary woman. From the producers of the acclaimed "Enjoying Opera" series, this is a revised and re-edited version of the original program which aired on public radio in 1988.

In this memorable audio, history comes alive and is preserved in people's own words through reflections on World War II. A young soldier writes his parents about the horrors he witnessed firsthand at Buchenwald. A black nurse tells of her encounter with wartime segregation. Other members of the Greatest Generation describe their war - in such historic episodes as the D-Day invasion, the Battle of the Bulge, and the dropping of the bomb on Nagasaki - as well as their lives on the home front. Starting with the Depression and Pearl Harbor, moving on through the war years in Europe, in the Pacific, and at home, this unique audiobook preserves a people's rich historical heritage and the legacy of a nation's heroism in war and its courage in peace.

The New Rascals Comedy Hour brings you the funniest live sets from comedy stars of today and tomorrow.

Every week, Audible and Rascals bring you a new show featuring established and up-and-coming stand-up stars in a live recording straight from Rascals Comedy Club, America's premiere comedy club.

This live performance features Frankie Hudak, Jeff Caldwell, and Brian Lowery. The evening was emceed by Brian Sheil. It was recorded live on August 19, 2005.