Sorry, I had to use that as the subject after reading this:

“When France’s most dashing philosopher took aim at Immanuel Kant in his latest book, calling him “raving mad” and a “fake”, his observations were greeted with the usual adulation. To support his attack, Bernard-Henri Lévy — a showman-penseur known simply by his initials, BHL — cited the little-known 20th-century thinker Jean-Baptiste Botul.

There was one problem: Botul was invented by a journalist in 1999 as an elaborate joke, and BHL has become the laughing stock of the Left Bank.”