没有什么比煤矿工人更美国了。
There's nothing more American than a coal miner.
We are all in the gutter, but some of us are looking at the stars.
The most valuable resource in agriculture isn't land or water—it's knowledge.
永远不要跟别人比幸运，我从来没想过我比别人幸运，我也许比他们更有毅力，在最困难的时候，他们熬不住了，我可以多熬一秒钟、两秒钟。