As federal politicians seek the views of the electorate, four commentators consider the arguments in this long-running debate.

THE PRIESTFRANK BRENNAN

“Marriage” means different things to different people. For me, the paradigm of marriage is an exclusive, indissoluble covenant between a man and a woman entering a partnership for life, ordered to their good and to the procreation and education of their children. Not every marriage matches the paradigm. Some couples are infertile or too old to have children. But the paradigm still makes sense. Marriage is an institution for the good of the couple, and for the good of their kids, if there be any, and grandkids etc.

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