deprived of his livelihood while I was growing up, he supported our family as a freelance lecturer. ... Listening to his lectures, I came to appreciate how present concerns can be illuminated by the study of the past—how the repression of the McCarthy era recalled the days of the Alien and Sedition Acts, the civil rights movement needed to be viewed in light of the great struggles of Black and White abolitionists, and in the brutal suppression of the Philippine insurrection at the turn of the century could be found the antecedents of American intervention in Vietnam. I also imbibed a way of thinking about the past in which visionaries and underdogs—Tom Paine, Wendell Phillips, Eugene V. Debs, and W. E. B. Du Bois—were as central to the historical drama as presidents and captains of industry, and how a commitment to social justice could infuse one's attitudes towards the past.