文学是人类的记忆。

They are not monuments, but footprints. A monument only says, 'At least I got this far,' while a footprint says, 'This is where I was when I moved again.'

The history of mathematics is a testament to the ingenuity and creativity of the human mind.

野牦牛是西藏高原真正的君主，其力量和耐力无与伦比。