I found this interesting essay, entitled The Faith: The Nation: Prime Principles of Survival, in a collection of Frank Duff's essays entitled The Woman of Genesis. The essay is obviously written after Vatican II, since it mentions it, and the book was published in 1976, but I don't know the exact date for the essay itself.
Frank Duff, of course, was the founder of the Legion of Mary, and his cause for sainthood is currently being examined.
I've always been rather dismissive of the argument that Irish Catholicism, at its heyday, was "a mile wide and an inch deep"-- but Duff seems to support it here, to some extent at least. Then again, Duff had very high standards and perhaps he was over-critical. It's hard to tell.
I fear that the majority of our people have but a mechanical goodness. They attend Sunday Mass and the Sacraments but have no depth in their religion. They do not know it properly nor live their lives according to it. They can be quire undutiful, neglectful of the principles of honour, devoid of apostleship which the Vatican Counil has proclaimed to be a basic element of Catholicism. We are bringing forth little better fruits than respectable paganism would. Drinking has now become the new deluge. We are not being protected from the slaughter on the roads nor from the criminal. It is no answer to say that the same applies to other countries. We would be doing better if our religion were real.
It has always been imagined that the Irish people have a unique regard for the Mass. Therefore it is a shock to encounter proofs to the contrary. I have now covered a good deal of the surface of the country and I can tell you our experience in regard to daily Mass, which surely is the test of appreciation. The attendance is miserable in proportion. Yet in the smaller places there is nothing doing at that time, and the majority could attend. I specify one case where we had a priest with us and offered a week-day Mass to a village which normally has one on Sunday only. Not a single local turned up for it. Other places would be better but not much better. Does that sort of thing afford justification for our alleged love of the Mass?
Quite evidently that degree of religion is not going to stand up to the adverse influences which are every day thickening and marshalling themselves...
Acute French observers, coming here soon after the Second World War, declared that they saw a remarkable likeness between the Ireland of that time and the France of two hundred years previously; the same characteristics and same weaknesses. Two hundred years ago would have ago would have been the period in which France would have prided itself on being the most Catholic country in the world, that is immediately preceding the French Revolution. The French Revolution did not create all the hollowness and the hatred of religion which then appeared. It only revealed what was there. It was like taking off a mask.
There are many other interesting things in this essay. At one point Duff mentions sociologists (unnamed) who have predicted that Christians will have dwindled to less than five per cent of the world's population by the end of the century! And not in any spirit of derision or contradiction-- he seems to think this reasonable enough.
He also warns against the temptation of using modern media as a "short-cut" to evangelisation, saying they should be an "incidental aid" but adding that he has heard of but few conversions through reading and none through TV.