"Science is concerned with what is possible while engineering is concerned with choosing, from among the many possible ways, one that meets a number of often poorly stated economic and practical objectives."

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About Mike the construction worker, friend of Roark: "He worshipped expertness of any kind. He loved his work passionately and had no tolerance for anything save for other single-track devotions. He was a master in his own filed and felt no sympathy except for mastery. His view of the world was simple: there were the able and there were the incompetent; he was not concerned with the latter."

— Ayn Rand