Pope Leo XIV has called for pressure to be placed on governments to protect the environment as he stressed that damaging the natural world is incompatible with the Christian faith, in a speech at a climate conference Wednesday.

“We cannot love God, whom we cannot see, while despising his creatures” Leo told the conference which was held to mark 10 years since Pope Francis’ landmark document on the environment. “Everyone in society, through non-governmental organizations and advocacy groups, must put pressure on governments to develop and implement more rigorous regulations, procedures and controls.”

The American pontiff’s remarks came in his first major speech on the environment since his election in May. Leo has indicated he wants to continue with his predecessor’s efforts to tackle the climate crisis, opening a new ecological center in the papal summer residence of Castel Gandolfo, about 15 miles outside of Rome, and calling for the conversion of people “inside and outside the church” who don’t recognize “the urgent need to care for our common home.”