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Source: Kulturphilosophie (1923), Vol. 2 : Civilization and Ethics, Chapter 26
2010s, Speech at the Republican National Convention (July 20, 2016)
Source: The Anarchist Cookbook (1971), Chapter Two: "Electronics, Sabotage, and Surveillance".
Source: Evolution and Theology (1900), p. 11.
                                        
                                         Speech http://www.nytimes.com/1987/06/10/us/biden-joins-campaign-for-the-presidency.html announcing entry into 1988 presidential race, Wilmington, Delaware (June 10, 1987) 
1980s
                                    
                                        
                                        "Democracy: Its Presumptions and Realities" (1932); also in The Spirit of Liberty: Papers and Addresses (1952), p. 92. 
Extra-judicial writings
                                    
"Putting First Things First", Foreign Affairs (January 1960)
 
                            
                        
                        
                         
                            
                        
                        
                         
                            
                        
                        
                         
                            
                        
                        
                        