Don't believe a teaching just because you've heard it from a man who's supposed to be holy, or because it's contained in a book supposed to be holy, or because all your friends and neighbors believe it. But whatever you've observed and analyzed for yourself and found to be reasonable and good, then accept that and put it into practice.
...One who possesses four qualities is deposited in heaven as if brought there. What four? Bodily good conduct, verbal good conduct, mental good conduct, and gratitude or thankfulness. One possessing these four qualities is deposited in heaven as if brought there.
When you know for yourselves, 'These things are wholesome; these things are blameless; these things are praised by the wise; these things, if undertaken and practiced, lead to welfare and happiness,' then you should engage in them.
Do not accept anything simply because it has been said by your teacher, or because it has been written in your sacred books, or because it has been believed by many, or because it has been handed down by your ancestors. Accept and live only according to what will enable you to see truth face to face.