Harry Hurt III is a journalist and professional dilettante who puts it all on the line in the search for freedom and joy in the most unlikely of places. And the likely ones, too. Whether he's flying a vintage Mustang, risking his neck at polo, or risking his dignity dancing with the New York City Ballet, Hurt gives the readers of his "Executive Pursuits" columns in The New York Times a Plimpton-esque glimpse of the adventures hidden just around the...