验证不仅仅是发现错误；它关乎理解系统为何以某种方式工作。

数学的本质在于其自由性。

I'm not trying to be provocative. I'm just being honest.

"The beauty of literature is that it allows us to live multiple lives in one."

最成功的公司不只是销售产品，他们还销售体验和情感。