You can always juice sales by going down-market, but it's hard to go back upmarket.
少即是乏味。
There is no failure except in no longer trying.
系统设计的未来在于将形式化方法与传统工程实践相结合。
Marxian Socialism must always remain a portent to the historians of Opinion — how a doctrine so illogical and so dull can have exercised so powerful and enduring an influence over the minds of men， and， through them， the events of history.
You cannot get through a single day without having an impact on the world around you. What you do makes a difference, and you have to decide what kind of difference you want to make.