没有执行的创新只是一个想法。

The labor which it would require to make a single one of these guns by hand would exhaust the patience and perseverance of any ordinary workman.

编程界最重要的事情是不断学习和实践。

Life is not fair; get used to it.

过去是幽灵，未来是梦想，我们拥有的只有现在。