"It is natural that doubt should arise in your minds.
"I tell you not to believe merely because it has been handed down by tradition, or because it had been said by some great personage in the past, or because it is commonly believed, or because others have told it to you, or even because I myself have said it.
"But whatever you are asked to believe, ask yourself whether it is true in the light of your experience, whether it is in conformity with reason and good principles and whether it is conducive to the highest good and welfare of all beings, and only if it passes this test, should you accept it and act in accordance with it."
- The Buddha
Kalama Sutta, Anguttara Nikaya.