The best way to maintain a program is to maintain it.

A little more persistence, a little more effort, and what seemed hopeless failure may turn to glorious success.

The universe we observe has precisely the properties we should expect if there is, at bottom, no design, no purpose, no evil and no good, nothing but blind, pitiless indifference.

性能的关键在于优雅，而不是大量的特殊情况。