 Another resource that has been invoked is morality. Recall Elizabeth Anderson’s discussion of the example of the choice between saving the life of one’s mother and maintaining a close friendship. Anderson regards the attempt to invoke a comparison of values as incoherent from the perspective of practical reason. Instead, ordinary moral thinking focuses on the obligations one has to one’s mother and one’s friends. In turn, Anderson suggests that the obligations themselves will provide guidance (1997, 106). The availability of such resources to reason is independent of her theories of value and rationality. John Finnis also points to principles of morality as guiding reason which avoids comparability problems (1997). It remains an open question as to how wide a range of cases it is in which morality can provide such guidance.