Rule of 7 in research. You can find out anything if you are willing to go seven levels. If the first source you ask doesn’t know， ask them who you should ask next， and so on down the line. If you are willing to go to the 7th source， you’ll almost always get your answer.

失败不可怕，可怕的是失去从失败中学习的能力。

有人说我有唱诗班男孩的声音，却长得像女校长。