A bit late in the day, but some fascinating stuff here:
- The CCC is a “compendium” or “reference book” of official Church Teaching. While much of this is infallible, some of it (such as the sections on science and technology) is more of a reflection on the world we live in, and other parts (such as the section on salvation outside the Church) should be read carefully and with discernment - as one earlier poster pointed out, understanding these may require a fairly in-depth knowledge of theology, Church Tradition and Scripture.
- About science - Robert, at one level, I completely agree with you. I’ve been involved in medical research myself, and I know how morally discouraging some of the practices involved can be. But the key here is not to reject the whole based on a few rotten parts.
I’m a psychiatrist myself, and am aware of the chicanery that goes on in drug, therapy and “nutritional supplement” trials. This doesn’t mean
science is wrong, any more than the existence of Jehovah’s Witnesses means the
Bible is wrong. Everything in this world, sacred or profane, can be put to good or evil uses. The real problem is not with science
per se, but with flawed human beings who care more about publications, papers and earnings than with the true advancement of knowledge for the benefit of mankind. I’ve personally experienced the “good” side of medical science too often (sometimes to life-saving extents) to dismiss it outright.
- About an “upper world” - well, to me there’s just one upper world, and that’s Heaven. (There may be levels in Heaven, as we can probably deduce from 2 Corinthians, but I don’t think they count as separate worlds.) But it’s worth nothing that several scientists - such as Karl Popper and even the non-theist Roger Penrose - do believe in the existence of a world of Platonic ideals, where scientific and mathematical ideas exist in their “pure form”. To me as a Catholic, that world would just be a part or sub-set of Heaven, if it does exist at all.

- About the wish to die - there’s a lot of difference between a saintly wish to be joined to God in Heaven (which we find, for example, in the letters of St. Paul) and the wish to commit suicide, which is sinful. But we must also remember that St. Paul expressed an equal wish to “remain here and continue his work”, and that he pointed out that “no man hates his flesh, but loves it and nourishes it.” Similarly, in the book of Tobit, both Tobit and Sarah pray for death - but God sends them deliverance and healing instead. Death will come to us at the time that God appoints it - to me, I guess He knows best, and I leave the date and time of my departure up to Him.
