Power is the ability to get ...

Power is the ability to get things done
 Rosabeth Moss Kanter

Quotes from the same author

Leaders must pick causes they won't abandon easily, remain committed despite setbacks, and communicate their big ideas over and over again in every encounter.
 Rosabeth Moss Kanter
in most important ways, leaders of the future will need the traits and capabilities of leaders throughout history: an eye for change and a steadying hand to provide both vision and reassurance that change can be mastered, a voice that articulates the will of the group and shapes it to constructive ends, and an ability to inspire by force of personality while making others feel empowered to increase and use their own abilities.
 Rosabeth Moss Kanter
Power stems from 'rainmaking,' as law firms put it: the ability to bring resources into the company.
 Rosabeth Moss Kanter
Leaders is the new organisation do not lack motivational tools, but the tools are different from those of traditional corporate bureaucrats. The new rewards are based not on status but on contribution, and they consist not of regular promotion and automatic pay rises, but of excitement about the mission and a share of the glory of success.
 Rosabeth Moss Kanter
Companies used to be able to function with autocratic bosses. We don't live in that world anymore.
 Rosabeth Moss Kanter