The author of this post writes,
The truth is this: the Magisterium permits a faithful Catholic to embrace either the Augustine/Aquinas view (lying is always wrong)—a view that is referred to as the “common teaching of Catholic theologians”—OR the less rigorous view proposed by other saints, bishops, and theologians (that permit lying in special cases). A good Catholic can accept either one of these views.In fact, the Magisterium does NOT allow "a good Catholic" to take either of these positions. For the Magisterium consists not merely in the Extraordinary Magisterium, which speaks through Councils and Encyclicals and ex cathedra pronouncements, but in the Ordinary Magisterium, which speaks through the continuous and uninterrupted teaching of the Church.
So that when the Ten Commandments tell us that we are not to "bear false witness", when Jesus says that the devil is a liar and "the father of all lies," when Jesus tells us that He is truth, when St. John says that "no lie is of the truth" (meaning of God), when St. Augustine writes at length about the immorality of lying, when the Angelic Doctor says the same, when the Catechism of Trent says
But the evil consequences of lying are not confined to individuals: they extend to society at large. By duplicity and lying good faith and truth, which form the closest links of human society, are dissolved; confusion ensues; and men seem to differ in nothing from demons.
... when you have all of these things, and when the modern Catechism of the Catholic Church condemns lying as intrinsically evil and renounces it in no uncertain terms, then what you have - even in the absence of concilliar documents or encyclicals - what you have is the weight of the Ordinary Magisterium of the Catholic Church.
The case is closed. A good Catholic may not lie. (This, parenthetically, is why we're all bad Catholics.)
This was argued exhaustively several years ago here and at other blogs.
And only a fraction of the participants were willing to argue in good faith, without a prejudiced agenda. That still seems to be the case.
And after months of arguing this out the last time it came down to this: GO AHEAD AND LIE IF YOU WANT TO, and may your conscience give you rest.
Because the Magisterium of the Church won't.