“A basic idea in communication theory is that information can be treated very much like a physical quantity such as mass or energy” – Claude Shannon

“Information is information, not matter or energy” – Norbert Wiener

“Without matter, there is nothing; without energy matter is inert; and without information, matter and energy are disorganized, hence useless” – Anthony Oettinger

“Energy flow is power; information flow is entropy; money flow (at least in one direction) is income” — C. F. Hockett