We may reject the contention that the ordering of institutions is always defective because the distribution of natural talents and the contingencies of social circumstance are unjust, and this injustice must inevitably carry over to human arrangements. Occasionally this reflection is offered as an excuse for ignoring injustice, as if the refusal to acquiesce in injustice is on a par with being unable to accept death. The natural distribution is neither just nor unjust; nor is it unjust that persons are born into society at some particular position. These are simply natural facts. What is just and unjust is the way that institutions deal with these facts.

John Rawls, A Theory of Justice (via philosophybits)