"The dead are invisible, they are not absent."
死者是看不见的，但他们并不缺席。
别难过……世界上有许多人还不知道他们到底是谁或什么。
Human kindness has never weakened the stamina or softened the fiber of a free people. A nation does not have to be cruel to be tough.
成功的关键是失败……成功是由99%的失败组成的。
A miner's safety should never be measured in cost-benefit analyses.
The only way to have a good day is to start it with a positive attitude.