It is a very good explanation on why they are a good that should not only be defended but promoted, and shows that it is entirely in line with Christian apostolic tradition.
There is a series of videos from the 1960s which were brought to my attention. They were presented by Fr. Joseph Dunn and made by a production company called Radharc which he founded. They came to me by way of Fr. John Zuhlsdorf and to him by way of an Irish poster.