Abstraction is not just about hiding details; it's about creating a clear and concise model of the problem domain.
通往CEO办公室的道路不应该通过CFO的办公室，也不应该通过营销部门。它需要通过工程和设计。
The world is full of magic things, patiently waiting for our senses to grow sharper.
No man, for any considerable period, can wear one face to himself and another to the multitude, without finally getting bewildered as to which may be the true.