Don’t say anything about someone in email you would not be comfortable saying to them directly， because eventually they will read it.

It is the duty of a student to get everything out of a teacher， and the duty of a teacher to get everything out of a student.

我时刻准备着学习,但是我不喜欢别人给我上课。

在金融领域，唯一确定的就是不确定性。