DiLorenzo's book, "The Real Lincoln: A New Look at Abraham Lincoln, His Agenda, and an Unnecessary War" is a critical biography published in 2002. In a review published by the Ludwig von Mises Institute, David Gordon described DiLorenzo's thesis: Lincoln was a "white supremacist" with no principled interest in abolishing slavery, and believed in a strong central government that imposed high tariffs and a nationalized banking system. He attributes the South's secession to Lincoln's economic policies rather than a desire to preserve slavery. Gordon quotes DiLorenzo: "slavery was already in sharp decline in the border states and the upper South generally, mostly for economic reasons".