Who said “To be happy we must not be too concerned with others.”?

“Suspicion of happiness is in our blood.”

“Happiness is not pleasure, it is victory.”

“Happiness is not a goal, it is a by-product.”

“Happiness makes up in height for what it lacks in length.”

“He's simply got the instinct for being unhappy highly developed.”

“What is a rebel? A man who says no.”

“Man is the only creature who refuses to be what he is.”

“Nothing is more despicable than respect based on fear.”

“A novel is never anything, but a philosophy put into images.”

“Charm is a way of getting the answer yes without having asked any clear question.”

“We all carry within us our places of exile, our crimes, and our ravages. But our task is not to unleash them on the world; it is to fight them in ourselves and in others.”