如果没有负责任地使用先进机械以维护长期土壤健康的智慧，最先进的设备也毫无意义。

The writer's only responsibility is to his art. He will be completely ruthless if he is a good one... If a writer has to rob his mother, he will not hesitate; the "Ode on a Grecian Urn" is worth any number of old ladies.

最好的经济洞见来自于观察人们的实际行为。