1. If the present growth trends in world population, industrialization, pollution, food production, and resource depletion
  continue unchanged, the limits of growth on this planet will be reached sometime within the next 100 years.

  2. It is possible to alter these growth trends and to establish a condition of ecological and economic stability that is
  sustainable far into the future. The state of global equilibrium could be designed so that the basic material needs of
  each person on earth are satisfied and each person has an equal opportunity to realize his or her individual human
  potential.

  3. If the world's people decide to strive for this second outcome rather than the first, the sooner they begin working
  to attain it, the greater will be their chances of success.

..."for the first thirty years of the model, the world has been tracking along the unsustainable trajectory of the book's business-as-usual scenario." The curves, he said, matched the standard model, the one that ended in economic collapse sometime before midcenture.

- Bill McKibben, eaarth