Most moral issues in medicine and healthcare will instigate lively debate, but no subject seems to inflame tempers more than the question of abortion. The gulf between pro-life and pro-choice can be an uncompromising stance of deeply held beliefs and principles. On the one hand, there is the claim that the foetus is a human being with the same right to life as any other human being, and abortion is therefore nothing less than murder. On the other hand, it is argued that a woman has a right to choose what happens within her own body, and is therefore justified in deciding to have her foetus removed if she so wishes. Even a liberal view is problematic; these tend to take the view that it is permissible for an abortion to take place before a certain stage in the foetuses development, but not beyond that given point. Such an arbitrary perspective does seem difficult to quantify; how can anyone determine the criteria that would navigate a decision that finds termination acceptable today but morally reprehensible tomorrow?