"We all belong," Susila explained, "to an MAC---a Mutual Adoption Club. Every MAC consists of anything from fifteen to twenty-five assorted couples. Newly elected brides and bridegrooms, old-timers with growing children, grandparents and great-grandparents---everybody in the club adopts everyone else. Besides our own blood relations, we all have our quota of deputy mothers, deputy fathers, deputy aunts and uncles, deputy brothers and sisters, deputy babies and toddlers and teen-agers."
[...]
"Nothing," she assured him, "could be less like a commune than an MAC. An MAC isn't run by the government, it's run by its members. And we're not militaristic. We're not interested in turning out good party members; we're interested in turning out good human beings. We don't inculcate dogmas. And finally we don't take the children away from their parents; on the contrary, we give the children additional parents and the parents additional children. [...]"