思想，在理解和想象的程度上，都是被动的。

Competition regulates the rate of profit, and profit regulates the rate of accumulation.

The only thing that interferes with my learning is my education.

The world is a stage, but the play is badly cast.

心灵是一个操作符号表征的信息处理系统。

The real challenge is not growing more food, but growing it smarter with less waste.

相信自己，你可以做到。