Source: Speech http://hansard.millbanksystems.com/commons/1848/aug/30/business-of-the-session in the House of Commons (30 August 1848).
“It is proof of the most vital principle of the English Constitution, which no foreigner can understand, that when they are brought together in the public interest, they never get deflected from the main issue before them by the memory of ancient conflict or the impossibility of working together. That is the great secret of the paradox that in this country alone will you see the perfection of Parliamentary Government carried to the pitch it has been.”
            Speech in the Speaker's Courtyard of Parliament for his 80th birthday ceremony (25 July 1928), quoted in The Times (26 July 1928), p. 16 
Lord President of the Council
        
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Arthur James Balfour 48
British Conservative politician and statesman 1848–1930Related quotes
The Constitutional History of England (1873-8; Oxford: Clarendon Press, 1903) vol. 1, pp. iii-iv.
                                        
                                        Speech to the Empire Parliamentary Association's Conference in Westminster Hall (4 July 1935); published in This Torch of Freedom: Speeches and Addresses (1935), p. 5 
1935 
Context: It is often said to-day by detractors of democracy, at home and particularly abroad, that the parliamentary system has failed. After all, this is the only country... where parliamentary government has grown up, the only country in which it is traditional and hereditary, where it is flesh of our flesh and bone of our bone. Whatever failures may have come to parliamentary government in countries which have not those traditions, and where it is not a natural growth, that is no proof that parliamentary government has failed.
                                    
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In response to a comment by Douglas Mitchell (leader of the opposition) that South Africa was retreating into isolation, as quoted in The New Republic https://news.google.com/newspapers?id=rRI1AAAAIBAJ&sjid=wqULAAAAIBAJ&pg=5390%2C4506760, Glasgow Herald (30 May 1961)
                                        
                                         Speech to Conservative Party Conference (20 October 1967) http://www.margaretthatcher.org/document/101586 
Backbench MP
                                    
                                        
                                        The People's Rights [1909] (London: Jonathan Cape, 1970), pp. 137-138 
Early career years (1898–1929)