The pleasure culture of littering has become an ingrained human mentality. It affects people who are marginalised or in the wild, the Pope said, and it is they who are the victims. It is difficult for us to admit," said the Pope, "that the harmony of the natural world is a system (an ecosystem): the existence of life cycles. Catechesis on the family, in collaboration with Fr Eric Frank Randriamiandrinirinarivo.