By Thomas D. Williams, Ph.D., Breitbart - Francis also warned that “our selfishness, our indifference, and our irresponsibility” threaten the future of the generations to come... “I therefore renew my appeal,” he said, “let us take care of our Mother Earth, let us overcome the temptation of selfishness that makes us predators of resources, let us cultivate respect for the gifts of the Earth and creation, let us finally inaugurate an eco-sustainable lifestyle and society.”