Joseph Nye said this quote

Leadership experts and the public alike extol the virtues of transformational leaders - those who set out bold objectives and take risks to change the world. We tend to downplay 'transactional' leaders, whose goals are more modest, as mere managers.

~ Joseph Nye

As we think of power in the 21st century, we want to get away from the idea that power's always zero sum - my gain is your loss and vice versa. Power can also be positive sum, where your gain can be my gain.

~ Joseph Nye