农时：指春耕、夏耘、秋收三个时令。与其等灾荒来了再想办法补救，不如早防备灾荒，而防备灾荒最好就是抓住农时。

逻辑学研究不仅仅是关于正确推理，更是关于思维的自由。

感谢那些曾经看轻我的人，让我不低头更精彩的活。

"In the vastness of the cosmos, every discovery is a step closer to understanding our place in it."

译文：世间总有得不到的东西，也总有办不到的事。

"The colony represents the site where the project of a new humanity is to be tested."

The night is a great teacher, but few are willing to learn.