过去是一个陌生的国度；他们在那里做事的方式不同。

The Soviet man was a man who was always waiting—for rations, for orders, for the end.

In the world of mathematics, every question leads to another, creating an endless web of knowledge that connects all areas of science.

在推动科学进步的同时，我们必须尊重自然的智慧。