Hope is a good thing, maybe the best of things, and no good thing ever dies.

永远不要低估一个相信共同愿景的团队的力量。

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.

凡是做学问，必须从各个方面都理解透彻，还要更进一步深入理解内在的道理。