Speech in the Reichstag (25 February 1918), quoted in W. M. Knight-Patterson, Germany. From Defeat to Conquest 1913-1933 (London: George Allen and Unwin, 1945), pp. 159-160 
1910s
                                    
“On the other hand, when we think of what would have happened to us, to France or to Belgium if the Germans had won; when we think of the terms which they exacted from Rumania, or of the terms of the Treaty of Brest-Litovsk; when we remember that up to a few months of the end of the War German authorities refused to consider that Belgium could ever be liberated, but said that she should be kept in thrall for military purposes for ever, I do not think that we need break our hearts in deploring the treatment that Germany is receiving now. Germany is not satisfied; but…no concession which has been made has produced any very marked appearance of gratitude. Once it has been conceded it has seemed less valuable than when it was demanded.”
             Speech https://api.parliament.uk/historic-hansard/commons/1933/apr/13/adjournment-easter-1#column_2790 in the House of Commons (13 April 1933) 
The 1930s
        
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Winston S. Churchill 601
Prime Minister of the United Kingdom 1874–1965Related quotes
Diary entry (3 August 1914), quoted in John Keiger, 'France' in Keith Wilson (ed.), Decisions for War 1914 (London: University College London Press, 1995), pp. 139-140.
Source: 1910s, Speech in the Reichstag, 21 June 1918, p. 175
                                        
                                        Remarks to representatives of the foreign press in Berlin (23 November 1923), quoted in W. M. Knight-Patterson, Germany. From Defeat to Conquest 1913-1933 (London: George Allen and Unwin, 1945), p. 341 
1920s
                                    
                                        
                                        The Liberals' Mistake (1987) 
Context: The country we live in is a laboratory. We have one experiment after another. Unfortunately, it is not a laboratory where no one gets hurt: some lives are enhanced, others are ruined. We have to view our society with concern and passion, and see what we can learn from each of our experiments. When we get upset and angry about politics — whether it is conservative, liberal, or whatever — we tend to think in terms of right and wrong, not what we can learn.
                                    
“When we build, let us think that we build for ever.”
Source: The Seven Lamps of Architecture (1849), Chapter VI: The Lamp of Memory, section 10.
                                        
                                        Speech in the Reichstag (19 February 1918), quoted in W. M. Knight-Patterson, Germany. From Defeat to Conquest 1913-1933 (London: George Allen and Unwin, 1945), pp. 149-150. 
1910s