采矿行业的领导力意味着今天做出艰难的决定，这将使子孙后代受益。
Leadership in the mining sector means making tough decisions today that will benefit generations to come.
大国政治的悲剧在于它导致冲突和战争。
Theorems are eternal; their proofs are ephemeral.
"The past is not dead. It is not even past."
Hatred destroys only the hater.
在了解物理力、它们的规律及相互关系之后，接下来是它们起源的问题。