I think you have to listen to the people who are deeply unhappy. You have to find the source of it and not overreact to the craziness in it.
More compassionate mind, more sense of concern for other s well-being, is source of happiness.
Your most unhappy customers are you greatest source of learning.
Failure and its accompanying misery is for the artist his most vital source of creative energy.
Human behavior flows from three main sources: desire, emotion, and knowledge.
The secret source of humor is not joy but sorrow; there is no humor in heaven.
It is thus tolerance that is the source of peace, and intolerance that is the source of disorder and squabbling.
Self-love is the source of all our other loves.
The art and science of asking questions is the source of all knowledge.
The only source of knowledge is experience.
I believe that the best cameraman is one who recognizes the source, the story as the basis of his work.
Your most unhappy customers are you greatest source of learning. Bill Gates