The unity of knowledge and action is not only a theoretical issue but also a practical one.
知行合一不仅是一个理论问题,也是一个实践问题。
这句话杨在不同场合说过多次,每次表述时可能有个别字的差异。
构建软件系统最困难的部分是准确决定要构建什么。
Happiness is not something ready-made. It comes from your own actions.