Most of Mr Gingrich's article was a disquisition on the dangers inherent in forming a common European currency.

ECONOMIST: Gingrich��s mirage

His disquisition on light, aimed at disproving Newton, was way off-beam.

ECONOMIST: Goethe

And our radical little book, which caused considerable controversy when it was published, now seems positively anachronistic--like an overheated disquisition on using the telephone for business.

FORBES: Malone's Musings

Yet this seriously crazed comedy is also a crazily serious disquisition on enslavement, and how it has been portrayed over the years and decades by slaves to Hollywood.

WSJ: Joe Morgenstern Reviews Django Unchained and Promised Land