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 If me can't move, you win. 
		   — John Hopcroft
		    
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			 Oct. 26, 1979 
		  
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 How about a proof by example? 
		   — John Hopcroft
		    
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			 Oct. 19, 1979 
		  
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 Now we can prove problems right and left to be NP-complete. 
		   — John Hopcroft
		    
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			 Oct. 19, 1979 
		  
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 Does everyone see the intuitive idea before we get into the details? Does anyone want to see the details? 
		   — John Hopcroft
		    
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			 Sept. 24, 1979 
		  
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 I'm going to call that a picture proof. 
		   — John Hopcroft
		    
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			 May 28, 1979 
		  
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 I'd hate to leave you for a vacation without showing you how to prove that a problem is NP-complete. 
		   — John Hopcroft
		    
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			 May 16, 1979 
		  
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 I should never do things carefully. 
		   — John Hopcroft, 
		   After messing up a proof by forgetting how to use induction 
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			 May 14, 1979 
		  
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 Let L_0 be your favorite NP-complete problem ... 
		   — John Hopcroft
		    
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			 April 25, 1979 
		  
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 I'll have you know I spent 13 hours preparing this lecture - so nobody had better sleep. 
		   — John Hopcroft
		    
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			 April 20, 1979 
		  
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 This is obvious to an educated person. 
		   — John Hopcroft
		    
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			 April 18, 1979 
		  
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