A novel is a conversation between the writer and the reader.
你最不满意的客户是你最大的学习来源。
In the old world， you devoted 30% of your time to building a great service and 70% of your time to shouting about it. In the new world， that inverts.
Theorems are the permanent literature of mathematics.
The most dangerous phrase in business is "We've always done it this way."