"The Pythagoreans, rather than Hippocrates himself, are believed to have been responsible for the passage in the Hippocratic Oath that prohibits assisting a woman to bring about an abortion: “I will give no deadly medicine to anyone if asked, not suggest any such counsel; and in like manner I will not give a woman a remedy to produce abortion.” The doubt about whether Hipporates actually wrote the prohibition on abortion in the oath attributed to him is due to the fact that Hippocrates (c. 460-377 B.C.E.) believed that fetuses became animated, not at conception, but on thirtieth day of gestation for male fetuses and the forty-second day for females."