So I put the question to Baron Skidelsky, who is to Keynes what Robert Caro is to LBJ.

FORBES: Niall Ferguson, Keynes and the Long Run

Aesthetes disliked the seemingly banal housing tracts "rising hideously, " as Robert Caro put it, from the urban periphery.

FORBES: New Geographer

And, as Robert Caro's multivolume biography of Lyndon Johnson reminds us, Hispanics historically hold the keys to victory, at least in party primaries.

CNN: Commentary: Latino voters want a better idea of 'change'

Perhaps they could suggest that he turn from promoting his own book to studying Robert Caro's recently published "The Passage of Power, " the fourth installment of the biography of Lyndon Johnson.

CNN: Marco Rubio's deeds and words don't match

Robert A. Caro. (Applause.) The 2009 National Humanities Medal to Robert A. Caro, for capturing the subtle machinations of political influence in America.

WHITEHOUSE: President Obama Presents Medals in Arts and Humanities