...a theory of justice that can serve as the basis of practical reasoning must include ways of judging how to… — Amartya Sen
...a theory of justice that can serve as the basis of practical reasoning must include ways of judging how to reduce injustice and advance justice, rather than aiming only at the characterization of perfectly just societies – an exercise that is such a dominant feature of many theories of justice in political philosophy today.
Source: Wikiquote · CC BY-SA 4.0
More from this book
To ask how things are going and whether they can be improved is a constant and inescapable part of the pursuit of justice.
When Hobbes referred to the dire state of human beings in having ‘nasty, brutish and short’ lives, he also pointed, in the same sentence, to the disturbing adversity of being ‘solitary’. Escape from isolation may not only be important for the quality of human life, it can also contribute powerfully to understanding and responding to the other deprivations from which human beings suffer. There is surely a basic strength here which is complementary to the engagement in which theories of justice are involved.
When we try to determine how justice can be advanced, there is a basic need for public reasoning, involving arguments coming from different quarters and divergent perspectives. An engagement with contrary arguments does not, however, imply that we must expect to be able to settle the conflicting reasons in all cases and arrive at agreed position on all issues. Complete resolution is neither a requirement of a person’s own rationality, nor is it a condition of reasonable social choice, including a reason-based theory of justice.

