The condition of man... is a condition of war of everyone against everyone.
The surest way to tame a prisoner is to let him believe he’s free.
成功不在于金钱，而在于幸福和满足感。
科学是个美妙的东西——如果无须靠它维生的话。
A whole stack of memories never equal one little hope.
If there was less sympathy in the world there would be less trouble in the world.
释义：天道是要使盈者亏损而补偿不满者；地道也是要使盈者溢出而流向不盈的一方；鬼神的本性也是损害盈满者而福荫那些空虚者；而人的本性也是讨厌满盈者而喜好不满者。
采矿创新不是可选的——它对生存和发展至关重要。