William M Briggs, initiator of Declaration to the Vatican on man-made climate change: The Magisterium of the Catholic Church makes no mention of earth’s optimal climate, or the best rate of change of the climate, nor should it. Neither optimum is known to anybody. Extreme caution, even skepticism, is warranted in any statement about the climate given the decades of failed and overreaching forecasts and hyperbole from official and interested sources. PEOPLE EVERYWHERE ARE ENCOURAGED TO SIGN THIS DECLARATION.