The Church and Childbearing

What does the Church say about abortion? Regarding respect for human life and, in particular, respect for the life of the unborn, isn't it a fact that many Christians are in open opposition to the Church? Do not some Christians run the risk of being reproached today with the same lack of courage lamentably seen among some Christians of former times?
The Catholic Church should take into account the evolution of morals and adapt her conception of sin to them. Why does the Church reject contraception? Must we not carefully distinguish sterilization from contraception through use of hormones?
When you say responsible parenthood you say contraception. But the Church is opposed to contraception. The Church makes it necessary for people to have recourse to abortion because she is opposed to contraception. Isn't effective contraception the best way to avoid abortion?
What consequences are entailed by the separation of sex from procreation in the conjugal union?    

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To download the texts, click here: The Church and childbearing (pdf file)