fabio rocha:
According to the Church, there are two aspects to the marital act – the procreative and the unitive.
Since the beginning.
Procreative:
Unitive:
This would’ve been a perfect answer… if Fabio had asked whether marriage itself is meant to be procreative and unitive. He didn’t, though: he asked where the teachings on the
marital act itself arise.
Fabio,
In understanding Church teachings, one must understand how the Church arrives at them. First off, the Bible doesn’t have the answer to every question hidden in it somewhere (other than the fact that the answer it
does provide – “follow Christ and attain eternal life in heaven” – is a pretty good one!). So, there are a whole range of questions that a person can ask that are either not in the Bible or require some sort of authoritative interpretation.
Second, when the Church
does teach, she doesn’t do so in a vacuum. It’s not like the Church has provided written answers to every potential question (“do aliens born on the fifth planet from Alpha Centuri have immortal souls?”), and she just dusts them off when the question eventually gets asked. Rather, as new situations rise, she authoritatively answers the questions.
I did a simple Google search (“procreative unitive”) and came up with a number of resources. Here’s a
brief collection of quotes from Church teaching. You’ll notice that they don’t really precede the middle of the 20th century. That’s because the question of the use of modern artificial birth control hadn’t become widely available – nor was its use accepted by Christians – until then.
Humanae Vitae itself was written as a response to the question, “can Catholics, too, use ABC?” In a sense, this question only could be asked as a reaction to the Anglican Lambeth Conference of 1930; and both
Christians and secular culture had impassioned objections to its teaching. In fact, in late 1930, Pius XI’s
Casti Connubi addressed the issue.
But, even that wasn’t the first time the Church had spoken on the issue – the link to the EWTN article I provided, above, claims that pre-1917 canon law forbids the use of contraception.
You’ll find Church teachings on marriage and intercourse and childbirth and raising children going back throughout the entire history of the Church. If you want to ask a question that only became askable in its current form in the 20th century, though, you’ll find answers from the 20th century.
Of course, since these questions are answered by the Church, the answers speak authoritatively to Catholics.