“What I must do is all that concerns me, not what the people think.”
“What concerns me is not the way things are, but the way people think things are.”
“You know what must be done.""No, I do not know what must be done. I do not routinely summon people from the grave and have them following me around!”
“You will become way less concerned with what other people think of you when you realize how seldom they do.”
“Be more concerned with character than reputation. Character is what you are, reputation is what people think you are.”
“I often say that I don't worry about the meaning of life--I can't handle that big stuff. What concerns me is the meaning in life--day by day, hour by hour, while I'm doing whatever it is that I do. What counts is not what I do, but how I think about myself while I'm doing it.”