你必须愿意承担风险。如果你不愿意,你就赚不到钱。
唯一存在的限制是你给自己设定的限制。
历史不仅仅是事实,更是我们赋予它们的意义。
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.