Religious faith is an important aspect of American culture and a fact of American political life.

An intuitionist conception of justice is, one might say, but half a conception.

The idea of public reason has to do with how questions should be decided, but it doesn't tell you what are the good reasons or correct decisions.

Thus I assume that to each according to his threat advantage is not a conception of justice.

Man is a historical being : The realisations of the powers of human individuals living at any one time takes the cooperation of many generations (or even societies) over a long period of time. By contrast with humankind, every individual animal can and does do what for the most part it might do, or what any other of its kind might or can do that lives at the same time.

Justice as fairness provides what we want.

A comprehensive doctrine, either religious or secular, aspires to cover all of life. I mean, if it's a religious doctrine, it talks about our relation to God and the universe; it has an ordering of all the virtues, not only political virtues but moral virtues as well, including the virtues of private life, and the rest. Now we may feel philosophically that it doesn't really cover everything, but it aims to cover everything, and a secular doctrine does also.