"In Atlas Shrugged I explain that a man has to live for, and when necessary, fight for, his values—because the whole process of living consists of the achievement of values. Man does not survive automatically. He must live like a rational being and accept nothing less. He cannot survive as a brute. Even the simplest value, such as food, has to be created by man, has to be planted, has to be produced. The same is true of his more interesting, more important achievements. All values have to be gained and kept by man, and, if they are threatened, he has to be willing to fight and die, if necessary, for his right to live like a rational being. You ask me, would I be willing to die for Objectivism? I would. But what is more important, I am willing to live for it – which is much more difficult."