Marriage has been shown to be conducive to the well-being of both men and women. An increasing proportion of older people, however, are likely to live alone because of the high divorce rate. This research raises the question of what factors might be involved in a stable and satisfying marriage. Data were gathered from 100 couples who have been married forty-five years or more. The variables identified by couples as important to their marriages were: being married to someone they liked as a person and enjoyed being with; commitment to the spouse and to marriage; a sense of humor; and consensus on various matters such as aims and goals in life, friends, and decision making. Husbands and wives were strikingly similar in their responses; thus, men and women perceive the same variables to be critical in the success of long-term marriages.