Aristotle emphasized the moral and ethical role of teachers. He believed that a teacher’s actions must reflect their teachings to set a good example and build trust among learners.
Option A: Mcckennan
Incorrect; not known for this educational maxim.
Option B: John Locke
Incorrect; focused more on experiential learning and tabula rasa, not this ethical principle.
Option C: Rousseau
Incorrect; emphasized naturalism in education but not specifically this point.
Option D: Aristotle
Correct; highlighted integrity and harmony between speech and action in educators.