Human life is precious and its preservation takes precedence over every other consideration. This includes the obligation to visit the sick and the permission to violate the Sabbath to help a person afflicted with a dangerous illness. It also includes the obligation of forbearance from doing anything that might hasten the death of a sick person, no matter how serious the illness (Maimonides, Hil. Aveil 4:5). Hence, euthanasia is forbidden under any circumstances (emphasis added). However, if death is certain, and the patient suffers greatly, it is permissible to desist from postponing death by artificial means.
It is taken from the pamplet "A Religious Response to Euthanasia" by Advocates for Better Care, 2340 Porter St., SW, P.O. Box 901, Grand Rapids, MI 49509-0901. (616) 530-2864.