"We can no longer turn our backs on our reality, on our brothers and sisters, on mother earth," the pope continued. "It is no longer licit for us to ignore what is happening to our surroundings as if certain situations did not exist or have nothing to do with our reality."
"Again and again comes the strength of that question of God to Cain: 'Where is your brother?'" he said. "I ask if our response continues to be: 'Am I my brother's keeper?'"
With such a strong reference to the Old Testament story of Cain's slaying of his brother Abel, Francis appeared to be forcefully saying Tuesday that humanity is destroying the Earth but is not taking responsibility for the destruction.