"I believe the correct quotation is, "This is the sort of errant pedantry up with which I will not put!"

*sigh*...I have seen 27 different formulations of what Winnie might have said...he probably DID say something close to one of them...but I doubt there was anyone with a recorder there...the was I remember it is "....sort of 'arrant'nonsense up with which"....

arrant connotes a different sense than 'errant',

Main Entry: ar·rant
Pronunciation: 'ar-&nt
Function: adjective
Etymology: alteration of errant
Date: 1553
: being notoriously without moderation : EXTREME <we are arrant knaves, all; believe none of us -- Shakespeare>
- ar·rant·ly adverb