656  The spirit in which a thing is given determines that in which the debt is acknowledged; it's the intention, not the face-value of the gift, that's weighed.
290  Public opinion is a weak tyrant compared with our own private opinion. What a man thinks of himself, that is which determines, or rather indicates, his fate.
715  “Whenever you're in conflict with someone, there is one factor that can make the difference between damaging your relationship and deepening it. That factor is attitude.”
233  "It is our attitude at the beginning of a difficult task which, more than anything else, will affect its successful outcome.
287  The greatest discovery of my generation is that a human being can alter his life by altering his attitudes of mind.