"We will force this war upon Hitler, if he wants it or not." - Winston Churchill (1936 broadcast)
"Germany becomes too powerful. We have to crush it." - Winston Churchill (November 1936 to US-General Robert E. Wood)
"Germany's unforgivable crime before WW2 was its attempt to loosen its economy out of the world trade system and to build up an exchange system from which world finance couldn't profit anymore." - Winston Churchill, The Second World War
"The war wasn't only about abolishing fascism, but to conquer sales markets. We could have, if we had intended so, prevented this war from breaking out without doing one shot, but we didn't want to." - Winston Churchill to Truman (Fultun, USA March 1946)
"This war is an English war and its goal is the destruction of Germany." - Winston Churchill (Autumn 1939 broadcast)
Some others are sometimes added, but these ones are always quoted together, always without exception in the same order. Do we know what the original source of them is?
The quote regarding forcing Hitler into war appears in They Didn't Listen, They Didn't Know How by Olwen Davies pg 682 published 2013 maybe worth asking the author for a Citation. Be warned he's a total nut.
It's harder to figure out the source of a lie than the truth the nuts all quote one another.
A nearly identical statement is attributed to another party in the 30s
" The truth of the Führer’s words that the eternal Jew is the real inciter of war is proven by Bernard Lecache, the president of the “International League against Anti-Semitism,” who wrote in his Paris newspaper Le Droit de vivre: “Our task is to declare pitiless war against Germany, world enemy #1. One may be sure of this: We will lead that war!” The Jew wrote this on 9 November 1938, and the chamber pot biographer Emil Ludwig Cohn wrote this in the magazine Les Annales as early as 1934: “Hitler does not want war, but we will force it on him, not this year, but soon.”"
See http://research.calvin.edu/german-propaganda-archive/niemals.htm