“Never promise more than you can perform.” – Publilius Syrus
“Never impose your language on people you wish to reach.” – Abbie Hoffman
“One of the best ways to persuade others is with your ears- by listening to them” – Dean Rusk
“The way to gain a good reputation is to endeavor to be what you desire to appear.” – Socrates
“Your most unhappy customers are your greatest source of learning.” – Bill Gates
“The dictionary is the only place where success comes before work.” – Vince Lombardi
Stephen R. Covey. Great Quotes on Leadership and Life. Franklin Covey Co, 2013.