不要借钱给你的朋友，除非你愿意把借出去的钱当成礼物。

The true cost of coal isn't just in its price, but in how we manage its consequences.

有人居住的世界的边界是由人类知识的极限决定的。

Ask the Possible of the Impossible,“Where is your dwelling-place？”“In the dreams of the impotent.”comes the answer.