Philosophical foundations of respect for autonomy.

Understanding the philosophical foundations of the principle of respect for autonomy is essential for its proper application within medical ethics. The foundations provided by Immanuel Kant's principle of humanity and John Stuart Mill's principle of liberty share substantial areas of agreement including: the grounding of respect for autonomy in the capacity for rational agency, the restriction of this principle to rational agents, and the important distinction between influence and control. Their work helps to clarify the scope and role of the principle of respect for autonomy in health care delivery; its implications for truth telling, informed consent, and confidentiality; and its relationship to other moral principles, such as beneficence and distributive justice.