Justice is happiness according to virtue.

Justice as fairness provides what we want.

What's important is that people give the kinds of reasons that can be understood and appraised apart from their particular comprehensive doctrines: for example, that they argue against physician-assisted suicide not just by speculating about God's wrath or the afterlife, but by talking about what they see as assisted suicide's potential injustices.

Liberal constitutional democracy is supposed to ensure that each citizen is free and equal and protected by basic rights and liberties.

A scheme is unjust when the higher expectations, one or more of them, are excessive. If these expectations were decreased, the situation of the less favored would be improved.

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.

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