数学不是一项观赏性运动。

城市是一个记忆的迷宫，每一条街道，每一栋建筑，每一个角落都藏着一个等待被发现的故事。

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

A man is a success if he gets up in the morning and gets to bed at night, and in between he does what he wants to do.

成功是一段旅程，而不是终点。不断学习，不断成长。