人类不仅是一种地质因素，而且可能是所有地质力量中最强大和最普遍的。

Honor is like an island, rugged and without a beach; once we have left it, we can never return.

真相并不总在事实中，有时它隐藏在想象的褶皱里。

The teacher is not in school to impose certain ideas or to form certain habits in the child, but is there as a member of the community to select the influences which shall affect the child and to assist him in properly responding to those influences.