Believe nothing,
No matter where you read it,
Or who has said it,
Not even if I have said it,
Unless it agrees with your own reason
And your own common sense.
He whose inflowing thoughts are dried up, who is unattached to food, whose dwelling place is an empty and imageless release - the way of such a person is hard to follow, like the path of birds through the sky.
Believe nothing, O monks, just because you have been told it, or it is commonly believed, or because it is traditional or because you yourselves have imagined it. Do not believe what your teacher tells you merely out of respect for the teacher. But whatsoever, after due examination and analysis, you find to be conducive to the good, the benefit, the welfare of all beings - that doctrine believe and cling to and take as your guide.