Yet, in 1850 nearly all the railroads in the United States lay east of the Mississippi River, and all of them, even when they were physically mere extensions of one another, were separately owned and separately managed.

- John Moody

Sooner or later the Internet will become profitable. It's an old story played before by canals, railroads and automobiles.

- Paul Samuelson

Whether it's steamships disrupted by the railroads or railroads disrupted by the airlines, it's typically the large entrenched incumbents that are displaced by innovators.

- Peter Diamandis