“Energy is the only universal currency: one of its many forms must be transformed to another in order for stars to shine, planets to rotate, plants to grow, and civilizations to evolve.” FormOrderEnergyStarsGrowsPlanetsCivilizationUniversalShiningPlantEvolveTransformedCurrency Author:Vaclav Smil
“A useful analogy is to see traditional societies as relying on instantaneous (or minimally delayed) and constantly replenished solar income, while modern civilization is withdrawing accumulated solar capital at rates that will exhaust it in a tiny fraction of the time that was needed to create it.” ModernNeededCivilizationRateTinyIncomeTraditionalFractionsAnalogiesDelayedInstantaneousModern CivilizationWithdrawing Book:Energy: A Beginner's Guide Source: Energy: A Beginner's Guide