“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.”
— Dale Carnegie“Be wiser than other people if you can; but do not tell them so.”
— Dale Carnegie“you can measure the size of a person by what makes him or her angry”
— Dale Carnegie“A man convinced against his will Is of the same opinion still”
— Dale Carnegie