We must face our reality through literature.

Every mathematical problem has a solution, but not every solution is immediately apparent.

It is the user who should parameterize procedures, not their creators.

出自《抱朴子·博喻》。登高的人，要警惕的是爬高了会摔下来，渡深水的人，往往是因为船太重才出了祸。要适可而止，不要过于贪婪。