““And there was a fourth, “highest grade” of marriage, which included the best features of the others, “home sympathies” and “intellectual communion,” but added to these a “religious” dimension, “expressed as a pilgrimage towards a common shrine.” Margaret was careful to specify that by “religion” she meant “the thirst for truth and good, not the love of sect and dogma.” She also had in mind a particular style of devotion: a “reverent love,” a sense that one’s partner is the “only true” companion, the only other one “of all human beings” who can “understand and interpret . . . my inner and outer being.””