No man's knowledge here can go beyond his experience.

The tears of the world are a constant quantity. For each one who begins to weep, somewhere else another stops. The same is true of the laugh.

A composer's biography is written in his scores, not in his letters or diaries.

感知过程不仅仅是记录感官数据，而是涉及将这些数据主动组织成有意义的模式。