This article will argue that bioethics is not a value-free discipline but rather an attempt to find a best solution to the bioethical dilemmas challenging physicians and patients' decision-makings. Since there are different approaches in bioethical discourse, some say that all decisions are right as long as they are made on the basis of autonomy. This author will present a view to say that some answers are better than others. Physicians do not have to be neutral or to bury their own bioethical beliefs in response to the call of respecting to patient's autonomy. Medicine is a science of conscience with the goals to save life and treat diseases. Physicians must be allowed to express their views and be faithful to their own conscience in difficult cases in bioethical dilemmas.