I put a lot of emphasis on how to treat people. The reason for this is simple. The real success of our personal lives and careers can best be measured by the relationships we have with the people most dear to us - our family, friends, and coworkers. If we fail in this aspect of our lives, no matter how vast our worldly possessions or how high on the corporate ladder we climb, we will have achieved very little.

Mary Kay, You Can Have it All: Lifetime Wisdom from America's Foremost Woman Entrepreneur (ed. Prima Lifestyles, 1995)