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.

农业创新不仅仅是技术问题，更是思维方式的转变。

儿童有一种特殊的敏感性，集中体现他去吸收周围的一切。