“Any fool can make a fortune. It takes a man of brains to hold on to it after it is made.”

Arthur T. Vanderbilt II:

Within thirty years after the death of Commodore Vanderbilt in 1877, no member of his family was among the richest people in the United States, having been supplanted by such new titans as Rockefeller, Carnegie, Frick, and Ford. Forty-eight years after his death, one of his direct descendants died penniless. Within seventy years of his death, the last of the great Vanderbilt mansions on Fifth Avenue had made way for modern office buildings. When 120 of the Commodore’s descendants gathered at Vanderbilt University in 1973 for the first family reunion, there was not a millionaire among them.

And:

“Any fool can make a fortune,” the Commodore had told his son William, whom he still called Billy, shortly before he died. “It takes a man of brains to hold on to it after it is made.”

Fortune’s Children: The Fall of the House of Vanderbilt [Amazon]