The various techniques of artificial reproduction, which would seem to be at the service of life, and which are frequently used with this intention, actually open the door to new threats against life. Apart from the fact that they are morally unacceptable, since they separate procreation from the fully human context of the conjugal act, these techniques have a high rate of failure: not just failure in relation to fertilization but with regard to the subsequent development of the embryo, which is exposed to the risk of death, generally within a very short space of time. Furthermore, §woman’s womb, and these so-called “spare embryos” are then destroyed or used for research which, under the pretext of scientific or medical progress, in fact reduces human life to the level of simple “biological material” to be freely disposed of.