到了白头之年，我们同甘共苦；历史的是非功过，又由谁来评定呢？

我从不担心行动的危险，我更担心不行动的危险。

Technological breakthroughs are not achieved overnight, they require long-term investment and patient accumulation.

"The worst thing you can do to a writer is leave them alone."

学习问题的复杂性通常由假设空间的大小和结构决定。