Don't be afraid of enemies who attack you. Be afraid of the... - Dale Carnegie, How to Win Friends and Influence People

"If you argue and rankle and contradict, you may achieve a victory sometimes; but it will be an empty victory because you will never get your opponent's good will."

"It isn't what you have or who you are or where you are or what you are doing that makes you happy or unhappy. It is what you think about it."

"A man convinced against his will Is of the same opinion still"

"It isn't what you have or who you are or where you are or what you are doing that makes you happy or unhappy. It is what you think about it."

"Everybody in the world is seeking happiness—and there is one sure way to find it. That is by controlling your thoughts. Happiness doesn't depend on outward conditions. It depends on inner conditions."