either husbands or lovers

I'm chewing on this quote from Susan Sontag today:

“Great writers are either husbands or lovers. Some writers supply the solid virtues of a husband: reliability, intelligibility, generosity, decency. There are other writers in whom one prizes the gifts of a lover, gifts of temperament rather than of moral goodness. Notoriously, women tolerate qualities in a lover—moodiness, selfishness, unreliability, brutality—that they would never countenance in a husband, in return for excitement, an infusion of intense feeling. In the same way, readers put up with unintelligibility, obsessiveness, painful truths, lies, bad grammar — if, in compensation, the writer allows them to savor rare emotions and dangerous sensations. And, as in life, so in art both are necessary, husbands and lovers. It’s a great pity when one is forced to choose between them.”