The Outlook for Earthlings traces an unusual, difficult friendship across a lifetime, between women of stunningly opposite natures. Melanie Taper is timid, compelled to obey and venerate authority. Yet in unguarded moments she demonstrates such deadly insight into human foibles as to suggest a strength that has, for dark reasons, deliberately hidden itself lifelong. Scarlet Rand, by contrast, is rash, willful, and impatient of reverence of...