I think it's about the realization that she and a loved one, while both good and loving people, are simply incompatible. Instead of complementing each other, their tendencies nullify one another. Despite both being agreeable, they are disagreeable together. They add up to zero.
However, this is not an easy conclusion to come to, for they genuinely love one another, and to face the reality of their ultimately untenable relationship, they must quiet the inner voice which tells them of the importance of love.
I think the "exhausting inexhaustibles" refers to the toll that their list of incompatibilities has taken on what would otherwise have been an inexhaustible supply of love they had for one another.
I think it's about the realization that she and a loved one, while both good and loving people, are simply incompatible. Instead of complementing each other, their tendencies nullify one another. Despite both being agreeable, they are disagreeable together. They add up to zero.
However, this is not an easy conclusion to come to, for they genuinely love one another, and to face the reality of their ultimately untenable relationship, they must quiet the inner voice which tells them of the importance of love.
I think the "exhausting inexhaustibles" refers to the toll that their list of incompatibilities has taken on what would otherwise have been an inexhaustible supply of love they had for one another.