孔子说：“君子心怀仁义，小人心怀财利。”

The most innovative solutions often come from constraints.

The language of mathematics is universal, and it is through this language that we can communicate the most profound truths of the universe.

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.

山溪里的水随着季节常涨常退，不明事理的小人反复无常。

在科学中，我们必须接受我们最珍视的理论可能是错误的这种可能性。

我教育孩子们要独立——就像我自己一样。

在商业中，就像在生活中一样，诚信是唯一不会贬值的货币。