The most effective debugging tool is still careful thought, coupled with judiciously placed print statements.

On pivoting: "If you're not stubborn， you'll give up on experiments too soon. And if you're not flexible， you'll pound your head against the wall and you won't see a different solution to a problem you're trying to solve."

在书法和绘画的笔墨之间，可以窥见天地的精神。

真相总是不合时宜。