Mathematics is not a spectator sport.

I'm not afraid of aging. I think it's a privilege to grow old.

能够生存下来的公司将是那些最快适应新能源现实的公司。

虽然殴打同学的行为不能通融，但我知道友情是值得捍卫的。

The dead are visible only in the terrible lidless eyes of memory.

Once we realize that imperfect understanding is the human condition, there is no shame in being wrong, only in failing to correct our mistakes.

相对论不仅仅是一个科学理论，而且是一个哲学理论。