The vulnerability of a patient gives rise to special obligations to provide aid, but the extent of our obligations to those vulnerable is not always clear. How far we are obligated to provide aid raises profound questions over the balance of liberty, equality, utility, and other core values for which we ought to strive in modern society. This essay helps illustrate how such a balance must be worked out in relation to rich contexts and be responsive to continually evolving epistemic (...) and social configurations. (shrink)