There is only one condition in which we can imagine managers not needing subordinates, and masters not needing slaves. This condition would be that each inanimate instrument could do its own work.
No, General. I'm not your subordinate. And what I'm coming dangerously close to is violence. -General Wedge Antilles
Like a good parent can't also be his child's best friend, a leader with authority requires some separation from subordinates.
My rationale was that commanders and leaders have to judge and assess subordinates on their merit, and considerations that are not merit-based should not be part of the equation.
Norton A. Schwartz
Ethical obligation has to subordinate itself to the totalitarian nature of war.
In any type of institution whatsoever, when a self-directed, imaginative, energetic, or creative member is being consistently frustrated and sabotaged rather than encouraged and supported, what will turn out to be true one hundred percent of the time, regardless of whether the disrupters are supervisors, subordinates, or peers, is that the person at the very top of that institution is a peace-monger.
Edwin H. Friedman