Cardinal Raymond Burke, a former archbishop of St. Louis known for a preference for Latin Mass and long robes during liturgies, makes the comments in an interview posted Thursday by the Catholic news agency ZENIT.
"Some argue the liturgy is mostly about aesthetics, and not as important as, say, good works done in faith," the interviewer asks Burke. "What is your view of this argument that one often hears?"
"It is the source of any truly charitable works we do, any good works we do," he continues.
"So the person whose heart is filled with charity wants to do good works will, like Mother Teresa, give his first intention to the worship of God so that when he goes to offer charity to a poor person or someone in need, it would be at the level of God Himself, and not some human level."
Burke currently serves as prefect of Supreme Tribunal of the Apostolic Signatura and is a member of the Vatican's Congregation for Bishops, responsible for helping recommend what men should be appointed Catholic bishops around the world.