But it is easier to draw the outline of a mountain than the changing appearance of a face; and truth in human relations is of this more intangible and dubious order: hard to seize, harder to communicate.

描画山的轮廓，比描画一张脸变化的神情容易；人际关系中的真实，也属于这种更难捉摸、更不确定的事物：难以把握，更难以传达。