Sergio Villa Kramsky

“Letting the wrong people hang around is unfair to all the right people, as they inevitably find themselves compensating for the inadequacies of the wrong people. Worse, it can drive away the best people. Strong performers are intrinsically motivated by performance, and when they see their efforts impeded by carrying extra weight, they eventually become frustrated.”
― Jim Collins, Good to Great: Why Some Companies Make the Leap...and Others Don't