Stephen Covey Quotes about Harmony
Stephen R. Covey (1994). “Daily Reflections for Highly Effective People: Living THE SEVEN HABITS OF HIGHLY SUCCESSFUL PEOPLE Every Day”, p.157, Simon and Schuster
Stephen R. Covey (2013). “The 7 Habits of Highly Effective People: Powerful Lessons in Personal Change”, p.98, Simon and Schuster