The knowledge of anything, since all things have causes, is not acquired or complete unless it is known by its causes.

The knowledge of anything, since all things have causes, is not acquired or complete unless it is known by its causes.

对任何事物的知识，因为所有事物都有原因，只有通过原因才能知道，否则就不能获得或完成。

-- Avicenna 阿维森纳