"I acknowledge human creativity and flexibility to adapt to changing circumstance is the best asset we have. While we do not have the power to rewrite the laws of thermodynamics that limit and shape human realities, we do have a remarkable capacity to reshape our individual and collective conception of reality in ways that facilitate rather than hinder cultural evolution. Money is simply a collective mental construct that we can redesign from first principles to reflect energetic realities and ethical values."
"... it has been calculated that half of the protein in the human biomass was created using nitrogen from the Haber Bosch process that uses vast quantities of fossil fuel to create nitrogen fertilisers that in turn allowed increased food production to grow the human biomass to over 6 billion bodies." (aneb hydroponicky lidi:)
David Holmgren - Money vs. Fossil Fuel