Liberty, utility, and justice: an ethical approach to unwanted pregnancy.

Three moral principles provide an ethical basis for the management of unwanted pregnancy. The principle of liberty guarantees a right to freedom of action; the utilitarian principle defines moral rightness by the greatest good for the greatest number; and justice requires that everyone have equitable access to necessary goods and services. Applied to unwanted pregnancy, these principles yield the conclusion that women have a natural right to reproductive freedom, and a social right to family planning and abortion services.