"Paul J. Adam" wrote in
a425couple writes
"Paul J. Adam" wrote
When you have to kill a man, it costs nothing to be polite.
W S Churchill
Where does this quote come from?

His work "The Grand Alliance". Apparently, some felt that the British
declaration of war against Japan on 8 December 1941 was too formal and
insufficiently blood-curdling.

Thank you for your kind, helpful, and informative response.
Yes, I have found it now on page 514 of my edition.