"If I try to use human influence strategies and tactics of how to get other people to do what I want, to work better, to be more motivated, to like me and each other-while my character is fundamentally flawed, marked by duplicity and insincerity-then, in the long run, I cannot be successful. My duplicity will breed distrust, and everything I do-even using so-called good human relations techniques-will be perceived as manipulative."

Source: Stephen R. Covey (1994). “Daily Reflections for Highly Effective People: Living THE SEVEN HABITS OF HIGHLY SUCCESSFUL PEOPLE Every Day”, p.5, Simon and Schuster