The only constant in life is change.
生命中唯一不变的是变化。
I know how much work it takes to get to the top, but even more to stay there.
预测未来的最好方法就是创造未来。
Coal companies must fulfill their social responsibilities while pursuing economic benefits.
在你年老之前,尽可能多地参加你能承受的葬礼,并仔细倾听。没有人会谈论逝者的成就。人们唯一会记得的是你在取得成就时是个什么样的人。