我们修复得最好的采石场将成为孙辈会感谢我们的资产。

自由从来不是被压迫者自愿给予的，必须由被压迫者争取。

Don't wait until everything is just right. It will never be perfect. There will always be challenges, obstacles and less than perfect conditions. So what. Get started now. With each step you take, you will grow stronger and stronger, more and more skilled, more and more self-confident and more and more successful.

每一次技术突破的背后，都是无数次失败的积累。