First definition:
Leadership is the skill set that allows a personal to motivate and coordinate others. It allows a person to achieve success above and beyond their own capabilities by harnessing the talents of others through an inspired and shared vision. Leadership is a two-way street, and therefore must be tailored to the followers.
This week's definition:
Leadership must be an outward expression of personal skills that bring others on board to a great mission. The other individuals must trust you, so the approach must be genuine and ethical. The ethical element requires the reasoning skills to understand what is right, not just your personal motivations and desires (Paul and Elder, p.6).
Analysis:
After this week's readings, it is clear that ethics play a critical role in motivating others. By maintaining a higher purpose, you can lead more effectively by holding the shared vision. Ethical reasoning allows people to strive to make the world a better place: a goal that can easily be translated and shared.
Paul, R., & Elder, L. (2006). "The Function of Ethics -- and Its Main Impediement." Understanding the Foundations of Ethical Reasoning (pp. 4 - 36). Dillon Beach, CA: Foundation for Critical Thinking.

This is fine -- but why did you throw out all of your thoughts from last week entirely? The definition is meant to be cumulative, and to build on itself week to week.
Grade: 7 out of 10
Clarity of the new definition: 1 point
Thoughtfulness of the analysis: 4 points
Grammar, spelling, and APA style: 2 points