The Ethiopians say that their gods are snub-nosed and black, the Thracians that theirs have light blue eyes and red hair.

忧愁在我心中沈寂平静，正如黄昏在寂静的林中。

人们生产生活资料的方式首先取决于他们发现并必须再生产的实际手段的性质。

Efficiency in grain production isn't an option—it's a necessity.

The essence of mathematics lies in its power to reveal patterns and symmetries.

Optimism is not just a trait; it's a skill that can be cultivated.

I’m not a pessimist. I’m an optimist who’s been through a lot.