"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."
"Don't be afraid of enemies who attack you. Be afraid of the friends who flatter you."
"When dealing with people, remember you are not dealing with creatures of logic, but with creatures bristling with prejudice and motivated by pride and vanity."
"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."
"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."