"Moral" Purposes and Material "Knowledge" in the Encyclical "Laudato si"

No doubts European culture has a Christian origin, although most European bureaucrats and politicians shamefully disregard this. The Christian origin can be recognized in the urban, linguistic and cultural characteristics that have contributed to produce the one of the broadest cultural heritage in the world, especially in Italy. The aim of this paper is to analyze the contents of the encyclical "Laudato si" to verify whether it contains methodological and technical approaches that could be helpful for environmental evaluation. To this end, the paper analyzes and compares three encyclicals: the first, "A Quo Primum" by Pope Benedict XIV (14 June 1751) on the role of the Christians towards the Jews; the second, by Pope Benedict XVI "Spe salvi" (30 November 2007) on the role of faith/hope; and the third "Laudato si" (24 May 2015) by Pope Francis, on the role of integral ecology. The encyclical "Laudato si" is especially refuted for the improper, and sometimes incorrect, use of theories, methods and data concerning ecological, environmental and physical issues.