不要走在我后面；我可能不会引领。不要走在我前面；我可能不会跟随。只要走在我旁边，做我的朋友。
Don't walk behind me; I may not lead. Don't walk in front of me; I may not follow. Just walk beside me and be my friend.
当没有人相信你时，你必须相信自己。
If we don’t measure our impact, we’re just guessing at sustainability.
When we write programs that "learn", it turns out that we do and they don't.