St. Cyril of Jerusalem

The Catholic, or universal, Church gets her name from the fact that she is scattered through the whole world from the one end of the earth to the other, and also because she teaches universally and without omission all the doctrines which are to be made known to mankind, whether concerned with visible or invisible things, with heavenly or earthly things. Then again because she teaches one way of worship to all men, nobles or commoners, learned or simple; finally because she universally cures and heals every sort of sin which is committed by soul and body. Moreover there is in her every kind of virtue in words and deeds and spiritual gifts of every sort.