译文：读书人本来就不是大富大贵的命，得意时也不必炫耀锦衣玉食。

I think it would be a disaster. The extraterrestrials would probably be far in advance of us. The history of advanced races meeting more primitive people on this planet is not very happy, and they were the same species. I think we should keep our heads low.

The language of poetry is a language of exploration, not of communication.

People must feel that the natural world is important and valuable and beautiful and wonderful and an amazement and a pleasure.

探索未知是人类永恒的追求。

先验与后验的区别是认识论的，而非形而上学的。