Indeed, he may be seen as the great pioneer of modern Catholic teaching on social justice.

He saw the gospel and Catholic social teaching as a means of empowering the poor.

Natural law is a basic source for Catholic teachings on sexual morality.

He has contributed to research in such topics as school choice and Catholic social teaching.

"I will 100 percent adhere to any formal Catholic teaching," he said.

And what about those politicians who, contrary to Catholic teaching, are for the death penalty?

Those practices, and their degree of variation from Catholic teaching, are dramatic.

I was reflecting Catholic teaching on the subject that one can have desire but it's when you act out those feelings that's a problem.

God is referred to as masculine in Catholic teaching and practice.

However, the right to the communication of the truth is not unconditional in Catholic teaching.