When God made the planet, he made the plants, he made the animals, he made the Sun and the Moon, and he made us, and we're all interconnected, and when we disregard, disrespect, or damage any part of it, we do violence against creation.

There's real economic costs to climate change - So, Superstorm Sandy led to billions of dollars in damages. The fires out in the west, 70 million dollars a day are being spent in fighting fires that have clearly been exacerbated by drought and climate change. So, people have pointed out the true dollars and cents cost of inaction on climate change.

What to do about climate change is political, it's social, and it's moral, which is one of the reasons the scientific community reached out to the Pope, to ask for his involvement in this issue.

Most people have thought of ... climate change as a problem about the environment that is separate and distinct from problems of human wellbeing.

The same mentality that leads to environmental despoliation, environmental destruction, also leads to damage to people.

It really is a very radical call ... to reject materialism as our central value and to think about the sanctity of life and what that really means if we take it seriously.

I think Pope Francis is our Pope Francis. I mean, the point of him is that he's a global leader, and he's trying, I think he's embracing that role.