All of the points that [Professor Lepore] raised were not just wrong, but they were lies. Ours is the only theory in business that actually has been tested in the marketplace over and over again.... And for her to take that on, to take me on and the theory on – I don't know where the meanness came from.

"Harvard Management Legend Clay Christensen Defends His 'Disruption' Theory, Explains The Only Way Apple Can Win" in BusinessInsider (28 October 2014)