The past is a foreign country; they do things differently there.

Always strive for excellence, not perfection.

The balance of power is the scale of peace.

I guess it comes down to a simple choice:get busy living or get busy dying.

如果我们为之奋斗，煤炭的未来是光明的。

音乐让我学会了珍惜每一刻。

在科学中，唯一不变的就是变化。