One of them was that the "fish on Fridays" rule was thought up by the church to help fishmongers clear their stock for the weekend.
At the time I laughed it off. But as the years have passed me by I found myself hoping that it's true.
You see the Church is Truth. It's also (bar some hideous post-V2 aberrations) rooted in common sense.
So if it can promote something a little self-sacrificing, which also helps a vital industry based firmly on the individual worker and family firms, then so much the better.
Paul McCartney even told us that giving up meat one day a week would 'help the planet' - and we all know that fish is brain food and highly nutritious.
So there we go. Four great reasons to be Catholic.
And here for all Catholic blog fans is a picture of a cat: