The economist needs the three great intellectual faculties, perception, imagination and reason: and most of all he needs imagination.
经济学家需要三种伟大的智力才能：感知、想象和理性；而最重要的是他需要想象力。
The present is the past rolled up for action, and the past is the present unrolled for understanding.
The essential function of art is moral.
The creation of a thousand forests is in one acorn.
