A just society is a society that if you knew everything about it, you'd be willing to enter it in a random place.

The intolerant can be viewed as free-riders, as persons who seek the advantages of just institutions while not doing their share to uphold them.

The hazards of the generalized prisoner's dilemma are removed by the match between the right and the good.

Peace surely is a good reason, yes. But there are other reasons too.

You might say that, if citizens are acting for the right reasons in a constitutional regime, then regardless of their comprehensive doctrines they want every other citizen to have justice. So you might say they're all working together to do one thing, namely to make sure every citizen has justice. Now that's not the only interest they all have, but it's the single thing they're all trying to do. In my language, they've striving toward one single end, the end of justice for all citizens.

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

Properly understood, then, the desire to act justly derives in part from the desire to express most fully what we are or can be, namely free and equal rational beings with the liberty to choose.