I've signed on to that "Read the Catechism in the Year" website, which send a catechetical entry and commentary each day. I like it. This was the commentary for today's entry "What happens in the Church when she celebrates the eucharist?":
"Again and again we grumble about the Church, as though she were just an association of more or less good people. In reality the Church is what happens daily in a mysterious way at the altar. God gives himself to each one of us individually, and he wants to transform us through communion with him. Once we are transformed, we are supposed to transform the world. Everything else that the Church is besides that is secondary."