The end of the fight was pure insanity.

"But what you are about to do isn't far short of pure insanity."

This may be a case of pure insanity.

"The end of the twenty-first century was pure insanity."

Is paying for a kitchen over 12 months pure insanity?

On closer examination, the rule was pure insanity on a military level.

It's pure insanity to think you can beat it.

Driving would be pure insanity unless the goal is sitting in two hour traffic jams.

Coming from anybody else, all of this might sound like pure insanity.

Then it trailed off and the armored figure turned a mask of pure insanity toward Sean.