If a doctrine is not unintelligible, it has to be vague; and if neither unintelligible nor vague, it has to be unverifiable.
如果一种教义不是费解的,它就必须是含糊的,如果它既不费解也不含糊,它就必须是无法验证的。
If you want to fly, you have to give up what weighs you down.
The history of science is the history of men correcting their mistakes.