“Energy” The Only Universal Currency
March 23rd, 2007 by Elliott Maynard
“Energy is the only Universal Currency. One of its many forms must be transformed into another for Stars to shine, Planets to rotate, Plants to grow, and Civilizations to evolve. Recognition of this Universality was one of the great achievements of nineteenth-century science, but, surprisingly, this recognition has not led to comprehenive systematic studies that view our world through the powerful Prism of Energy.”
…Valclav Smil, 1999 - Energies: An Illustrated Guide to the Biosphere and Civilization.