The election of Donald Trump has exposed American society's profound crisis of hope. By 2016 a generation of shrinking employment, rising inequality, the attack on public education, and the shredding of the social safety net, had set the stage for stunning insurgencies at opposite ends of the political spectrum. Against this dire background, Ronald Aronson offers an answer. He argues for a unique conception of social hope, one with the power for understanding and acting upon the present situation. Hope, he argues, is far more than a mood or feeling--it is the very basis of social will and...