“Leaders demonstrate their intense commitment to the values they espouse by setting an example: this is how they earn and sustain credibility over time. Setting an example is essentially doing what you say you will do. Leaders are measured by the consistency of deeds with words.” (Kouzes & Posner, 2002, p. 93)
Kouzes, J. M., & Posner, B. Z. (2002). The leadership challenge (3rd ed.). San Francisco: Jossey-Bass.