法律的概念本质上是一个社会事实问题。

The most important object of both the workmen and the management should be the training and development of each individual in the establishment.

The beauty of mathematics lies in its ability to simplify complex problems.

Psychology is the science of mental life in its adaptive relations.

点击化学不仅是一种方法，更是一种追求合成简单和可靠的哲学。

The artist must be a destroyer of illusions.

"El escritor es un testigo de su tiempo, y su obra es el reflejo de la sociedad en la que vive."

The study of the mind must be purely analytical.

苦难是智慧的学校。