Who said "The man who can manage himself can manage an empire."?

This quote is attributed to Cornelius Vanderbilt.

The man who can manage himself can manage an empire. - Cornelius Vanderbilt

"The man who can manage himself can manage an empire."

Cornelius Vanderbilt Leadership

Shipping & Railroad American 1794–1877

"I have always believed that the best way to earn money is to first learn how to make it."

"The public be damned."

"Concentrate your energy, thoughts, and capital."

"I have made my money by the blood, sweat, and tears of the American working man."

"A leader must be fair and just."

"Integrity is everything."

"One must take responsibility for one's environment."

"In this house, I make the decisions"