“Ironically, in the Middle Ages, before the discovery of the human sperm and eggs, the Catholic Church taught that the soul entered the human foetus at the time of quickening, when the mother can first feel the foetus move inside her. But this is about 18–24 weeks of gestation, well after the time at which most abortions are performed, and even longer since the foetus was a preimplantation embryo, so this teaching has been quietly forgotten.”