Before the 18th century, many marriages were not arranged, but rather developed out of more or less spontaneous relationships. After the 18th century, illicit relationships took on a more independent role. In bourgeois marriage, illicitness may have become more formidable and likely to cause tension. In "Ladies of the Leisure Class", Rutgers University professor Bonnie G. Smith depicts courtship and marriage rituals that may be viewed as oppressive to modern people. She writes "When the young women of the Nord married, they did so without illusions of love and romance. They acted within a framework of concern for the reproduction of bloodlines according to financial, professional, and sometimes political interests." Subsequent sexual revolution has lessened the conflicts arising out of liberalism, but not eliminated them.