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One man's constant is another man's variable.

If a doctrine is not unintelligible, it has to be vague; and if neither unintelligible nor vague, it has to be unverifiable.

The coal industry has been the backbone of America's energy independence for generations.

真相是美麗而可怕的東西，因此應該非常謹慎地對待。

即使是最強大的人也需要有人站在他身邊。