But although the cliche says that power always corrupts, what is seldom said ... is that power always reveals. When a man is climbing, trying to pers… - Robert A. Caro

These were the men who, during the “Middle Ages of American industry,” the half century of unbridled industrial expansion following the Civil War, had harnessed America’s vast mineral resources and tapped its long-stored capital to create needed industrial growth but who, to turn that growth into personal wealth, had stationed themselves at the “narrows” of production, the key points of production and distribution, and exacted tribute from the nation. They were the men who had blackmailed state legislatures and city councils by threatening to build their railroad lines elsewhere unless they received tax exemptions, outright gifts of cash — and land grants so vast that, by 1920, the elected representatives of America had turned over to the railroad barons an area the size of Texas. They were the men who had bribed and corrupted legislators — the Standard Oil Company, one historian said, did everything possible to the Pennsylvania Legislature except refine it — to let them loot the nation’s oil and ore, the men who, building their empires on the toil of millions of immigrant laborers, had kept wages low, hours long, and had crushed the unions. Their creed was summed up in two quotes: Commodore Vanderbilt’s “Law? What do I care for law? Hain’t I got the power?” and J. P. Morgan’s “I owe the public nothing.

I never conceived of my biographies as merely telling the lives of famous men but rather as a means of illuminating their times and the great forces that shaped their times — particularly political power, since in a democracy political power has so great a role in shaping the lives of the citizens of that democracy.

Power doesn’t corrupt, it reveals.