The best technology is the one you don't notice.
I don't like favors; they oppress and make me fell like a slave.I'd rather do everything for myself,and be perfectly independent.
在生活中取得成功的方法是既不要抱怨也不要摸索,而是要尝试。
判断两个λ表达式是否等价的问题是无法解决的。