The best way to learn mathematics is to do mathematics.
教育的最大的秘诀是:使身体锻炼和思想锻炼互相调剂。
States are inherently aggressive and expansionist.
The total speech act comprises both the act of uttering words and the act of meaning.
宇宙是一个相当大的地方。如果只有我们,那似乎是对空间的极大浪费。
The most sustainable product is one that lasts.