簡單地，自然道德正是印記在人之天生稟賦中自然本性的則。人依其存在之本性而朝向圓滿生命與純粹至善。在如此的基礎之上，面對生死抉擇的道德思與判斷，並訴諸道德實踐以成就道德價值，所依循的正是人性本然之善以及趨向純粹至善的追求。問題是：面對終病人，所言基於「善」而予以安護，是否即是人之自然本性（自然道德）之要求？「安死」難道違背人性之本然？「安死」與「終關懷」是否可能基於人性而相形悖？因為基於醫人員之職責「促進健康、預防疾病、維持健康、減輕痛苦」，面對終病人似乎成為可能？「安死」似乎成唯一出？本文企望由普遍存在於人性之內「應當善戒」的自然道德則，推演出對終病人的安護正是人之自然本性內的要求，以確終關懷於醫善之穩固基礎。
Simply speaking, Natural Law is precisely the law which imprints on human nature that a person is endowed with. Accordingly, man is naturally to be living satisfactorily and being absolutely pure good. On such a ground, it is exactly to comply with the pursuing of the good of real nature and tending the absolutely pure good when we face the moral reflection and judgment of the choice of life and death, appealing to moral practice in order to achieve moral values. But, we must ask that we take the incurable patients with hospice whether it is exactly the request of real nature (Natural Law) or not when we claim it is according to the good Is it possible that euthanasia is contrary to the real nature of man Do euthanasia and caring for the incurable patients disagree on account of human nature or not It is in view of the duties of medical personnel in promoting health, preventing disease, preserving health and mitigating suffering that it seems impossible to face incurable patients. Euthanasia seems to become the only way to treat the incurable. This paper looks forward to deduce that hospice is exactly the request of human in nature to incurable patients from the Natural Law of doing good and avoiding evil that is immanent in human nature, in order to establish firmly the stable foundation of doing good in medicine of caring the incurable patients.
