If you compare the United States with Europe, my view is that what happened in Europe is that the church became deeply distrusted by people, because it sided with the monarchs. It instituted the Inquisition and became part of the repressive state apparatus. That never happened here. We don't have that history.

Any comprehensive doctrine, religious or secular, can be introduced into any political argument at any time, but I argue that people who do this should also present what they believe are public reasons for their argument. So their opinion is no longer just that of one particular party, but an opinion that all members of a society might reasonably agree to, not necessarily that they would agree to. What's important is that people give the kinds of reasons that can be understood and appraised apart from their particular comprehensive doctrines.

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

Justice is the first virtue of social institutions, as truth is of systems of thought. A theory however elegant and economical must be rejected or revised if it is untrue; likewise laws and institutions no matter how efficient and well-arranged must be reformed or abolished if they are unjust.

An intolerant sect has no right to complain when it is denied an equal liberty... A person's right to complain is limited to principles he acknowledges himself.

Now the good of political life is a great political good. It is not a secular good specified by a comprehensive doctrine like those of Kant or Mill. You could characterize this political good as the good of free and equal citizens recognizing the duty of civility to one another: the duty to give citizens public reasons for one's political actions.

Ideally a just constitution would be a just procedure arranged to insure a just outcome.