Seeking distance from the dispiriting political news, I spent the best hours of last week reading various chapters of four books by Princeton historian Daniel T. Rodgers. I am as eager as the next guy to make sense of Donald Trump and Bernie Sanders, but I do not expect to work my way through to useful opinions by following the primary and caucus returns. So I turned to the work of a scholar who has spent his career writing about the evolution of the political culture of modern capitalism in the US over the last 150 years. I first read…