在人类社会的初期，每个人都是自私自利的。
我们必须为下一代留下健康的水域。
煤炭行业的高质量发展必须坚持安全第一。
Bad things can happen fast， but almost all good things happen slowly.
Success is not an entitlement. It has to be earned.
No one has ever written or painted, sculpted, modeled, built, or invented except literally to get out of hell.
The only purpose for which power can be rightfully exercised over any member of a civilized community， against his will， is to prevent harm to others.
"The power of words is immense, but it is also fragile and easily misused."