" The style of a soul. Do you remember the famous philosopher who spoke of the style of a civilization? He called it 'style.' He said it was the nearest word he could find for it. He said that every civilization has its one basic principle, one single, supreme, determining conception, and every endeavor of men within that civilization is true, unconsciously and irrevocably, to that one principle... every human soul has a style of its own, also. Its one basic theme. You'll see it reflected in every thought, every act, every wish of that person. The one absolute, the one imperative in that living creature. "

― Ayn Rand , The Fountainhead