"Psychology must focus on the utility of mental operations."

We don't stop playing because we grow old; we grow old because we stop playing.

The future of agriculture lies in sustainable practices that benefit both the farmer and the environment.

作家必须相信他所做的是世界上最重要的事情。即使他知道这不是真的，他也必须坚持这种幻觉。

植物杂交实验需要最仔细的关注和极大的耐心。

You can't build a reputation on what you are going to do.

Agricultural research should address national needs and solve practical problems, it cannot be separated from production practice.