Newt Gingrich is chairman of the Gingrich Group, a consulting firm that specializes in transformational change. Gingrich served as the Speaker of the U.S. House of Representatives from 1995 to 1999 and was a member of Congress for 20 years.

The Republican leader says a book about Margaret Thatcher is a must-read for Americans in this age of big government, and shares some of his other current favorites.