Don't complain, apologize, or mumble in the defense of reason. [...] Tell people exactly what you think and why you think it. - Peter Boghossian

The thrust of our message must be that there are things we don't know and it's okay not to know— even in death. Not claiming to know something you don't know isn't a character flaw, it is a virtue.

Seemingly impossible conversations typically have one thing in common: they're about moral beliefs rooted in one's sense of identity, but they play out on the level of facts (or assertions, name-calling, grandstanding, threats, etc.). [...] The most difficult conversations, then, masquerade as discussions about something other than morality, but they are actually about what qualities, beliefs, attitudes, and behaviors individuals believe make them good people or bad people and why it is important to hold the right views among those.

What it means to hold a belief based on evidence is, by definition, that one is open to the possibility that evidence might be discovered that would change one's mind. If no evidence would change one's mind, then one is not forming one's beliefs on the basis of evidence.