We forget the wisdom from our own past.
Emperor Ashoka 304-232 BCE.
Rock Edict XII.
'Restraint in speech'.
That is not praising one's own religion or condemning the religion of others without good cause...whoever praises his own religion, due to excessive devotion, and condemns others with the thought 'Let me glorify my own religion' only harms his own religion. Therefore, contact between religions is good. One should listen to and respect the doctrines professed by others. Beloved of the gods, King Piyadassi (Ashoka), desires that all should be learned in the good doctrines of other religions.