Efficiency in grain production isn't an option—it's a necessity.
There are no hard distinctions between what is real and what is unreal, nor between what is true and what is false. A thing is not necessarily either true or false; it can be both true and false.
知识不会使我们更丰富;它使我们越来越远离神话世界——这个我们曾经的天然家园。
解析:良知即是天理。