"once, maybe twice. But. . . . not forever"

     "The conclusions I’ve drawn from reflecting on the question are simple. First, we never know what the effect of telling the truth will be. It’s always worth telling it once, maybe twice. But there may come a time when you’ve done that, and there’s nothing more you can do. The penny may drop in their minds over time. It’s always worth saying what you believe to be true and maybe repeating it, but not forever.
     "A second conclusion is, however, that ideologues again are not interested in a conversation; they’re interested in either persuading you or making you submit. If someone approaches you in a provocative, insulting manner from the get-go, you know they don’t want a conversation. If you engage with them, you’re likely to be reduced to an undignified scrap in which you lose your dignity and your temper. So if someone approaches you in that fashion, refuse to engage on those terms. Some exchanges are simply not worth having. They’re dangerous, and silence is the best response. And there is good dominical precedent for Christians to use silence in response to what other people say.
     "The third thing I’d say is that even ideologues and zealots may speak the truth. And that’s why I felt I ought to respond to the ten most hostile critics to my book on colonialism. I paid them the respect of taking what they said seriously and assessing how much sense it made. I conceded three or four minor points to my most obsessive and recalcitrant critic.
     "Finally, zealots are not the only ones we are speaking to. In a conference I held in Oxford in 2019, Bret Weinstein gave us the gnomic advice, “Always remember the room is not the room,” which means, when you’re faced with an aggressive zealot, you need to think about how you behave to the people who are watching. They are the more important audience. So for their sake it may be important to speak the truth as best you can without being drawn into an undignified scrap."

     Nigel Biggar in Matthew Lee Anderson and Nigel Biggar, "Liberalism in the U.S. and the UK: A Q&A with Lord Nigel Biggar," Public Discourse:  The JKournal of the Witherspoon Institute, August 13, 2026.