Roger Martin would know.
Peter was a mentor to Roger and a dear friend.
Roger knows all the people at the Drucker Centre.
Given how often Peter is quoted as saying this the Drucker archivists studied every speech he ever gave and everything he wrote to find when he said this and it turns out he never did. It's just made up!
Does it matter? Well yes according to Martin.
When Roger joined us last week at Tenfold Australia he said if Peter were alive today he can't imagine him putting these two things in opposition.
And just for the record Drucker also never said "management is doing the right things and leadership is doing things right".
Thanks for clearing this up Professor Martin.