It's not always necessary to be better than everyone else, but to be better than you used to be.
Modern quarry management requires geologists' eyes, engineers' hands, and poets' hearts.
The greatest danger to American agriculture is the loss of the family farm.
A pure hand needs no glove to cover it.
人类历史证明,文化的进步取决于社会群体有机会从邻居的经验中学习。
如果因为这些而损害夺取人民的衣食之资,仁义的人是不会去做的。