This phrase bothers me. Maybe I’m unique in placing extreme value on knowledge, but if you are capable of educating someone, and they are willing to listen, you are obligated to do so.
Like, if you could prevent someone from dying but chose not to, I would hold you accountable for murder. And if you can educate someone but choose not to, then I hold you responsible for promoting ignorance.
Spreading knowledge among those willing to hear it is not an option, it is a moral obligation.