The Mission of Catholic Online is to Serve as a Center for the Exchange of Information for Catholics and All People of God, to Help them Deepen their understanding of Our Catholic Faith.

The Catholic Encyclopedia, as its name implies, proposes to give its readers full and authoritative information on the entire cycle of Catholic interests, action and doctrine.

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Specifically, Catholic Exchange is endeavoring to evangelize the world via the Internet with the Good News of Jesus Christ in the Catholic Church in obedience to Pope John Paul It's call for a "Springtime of World Evangelization." This is in response to the need for greater catechesis and revival of the lay faithful in a time when materialism and relativism are marginalizing Biblical principles as the basis on which people make moral choices.