We don't inherit the earth from our ancestors; we borrow it from our children—this is especially true in forestry.
城市是人类最伟大的发明。
【大意】说话一定要讲信用，约定了就一定要做到，这是天下的高尚行为。
无铬是不够的；我们需要无愧于心。
The only way to deal with an unfree world is to become so absolutely free that your very existence is an act of rebellion.
懒惰是所有恶习的开端，所有美德的王冠。
我们衡量成功的标准不仅是鱼的吨数，还有我们留下的遗产。
The past is never dead. It's not even past.