History, whether personal or collective, is the best guide to our individual and collective lives. We need always to compute who — or which action, in self or others — deserves praise, and which deserts principle and deserves criticism and condemnation. Biographical studies such as Gordon-Reed’s and O’Brien’s on Jefferson and Brookhiser’s and Chernow’s on Hamilton exemplify the rational and moral function of the good historian as envisioned by Lord Acton. They stimulate and inspire their reader, an “animal capable of reason,” into actually becoming a rational animal.Also worth reading on the issue is Allen C. Guelzo's essay, "What did Lincoln Really Think of Jefferson?"
in the New York Times, July 3, 2015.