简单比复杂更难：你必须努力工作，才能让你的思维变得清晰，以便使事情变得简单。

The training and improvement of labor are effective ways to increase productivity.

人对他自己建筑起堤防来。

让人们相信谎言的一个可靠方法是频繁重复，因为熟悉感不容易与真相区分开来。

The coal industry is about people, not just profits.

Farmers are the original environmentalists—they understand the land better than anyone.

The strength of a response tendency depends on the amount of reinforcement received.

真相就像太阳。你可以暂时挡住它，但它不会消失。

心理学理论必须通过实践经验的检验。