"Civilised discussion" refers to a conversation where people express their thoughts and opinions in a respectful and considerate manner. It involves listening attentively, being open-minded, and avoiding insults or personal attacks. Full definition
If you try this there will be consequences and forget civilised discussion (nextleft.org)
For the others who are capable of civilised discussion and are willing to engage with me, I am willing to put forward my reasoning based on the data. (realclimate.org)
Proust — please note policy on civilised discussion. (johnquiggin.com)