孔子说：“有益的朋友有三种，有害的朋友有三种。与正直的人交朋友、与诚实的人交朋友、与见多识广的人交朋友，有益处；与走邪门歪道的人交朋友、与谗媚奉迎的人交朋友、与花言巧语的人交朋友，有害处。”

The best way to learn a new programming language is by writing programs in it.

You can reduce the annoyance of someone’s stupid belief by increasing your understanding of why they believe it.

为儿童写作的秘诀是记住做孩子的感觉。