"Be not angry that you cannot make others as you wish them to be, since you cannot make yourself as you wish to be."
"You have to expect things of yourself before you can do them."
"To be nobody but yourself in a world which is doing its best, night and day, to make you everybody else means to fight the hardest battle which any human being can fight; and never stop fighting."
"Always be a first-rate version of yourself, instead of a second-rate version of somebody else."