Many former MPs write memoirs but few are as readable or as instructive as these reflections from former National Party Senator Ron Boswell, who retired in 2014 after thirty-two years in harness. For seventeen years, he was the Nationals’ Senate leader but chose never to have the cabinet job that his leadership role would have entitled him to: first, because he didn’t want to stand in the way of younger, more obviously talented people; and second, because he didn’t want to lose the ability to speak up on issues, free of the dictates of cabinet solidarity.  Humility plus passion for…