The power of abstraction is that it allows us to reason about systems at a higher level, without getting bogged down in the details.

The only person you should try to be better than is the person you were yesterday.

The Internet is for everyone.

宣传是这种文化的生命——因为没有宣传，资本主义就无法生存。

价值链是通过其创造并将产品或服务交付给客户的一系列活动。