One cannot use with impunity the different categories of beings-animals, plants, the natural elements-simply as one wishes, according to economic needs. One must take into account the nature of each being and its mutual connection in an ordered system, which is the cosmos.
Pope John Paul IIThe most profound and serious indication of the moral implications underlying the ecological problem is the lack of respect for life evident in many of the patterns of environmental pollution.
Pope John Paul IILife is entrusted to man as a treasure which must not be squandered, as a talent which must be used well.
Pope John Paul II