The aim of every artist is to arrest motion, which is life, by artificial means and hold it fixed so that a hundred years later, when a stranger looks at it, it moves again since it is life.
球体是所有立体图形中最美的。
技术可以彻底改变水产养殖，但前提是谨慎且有远见地应用。
The concept of purpose has no place in a scientific account of behavior.