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1820s
                                    
            "Great kaja! Kill them all!" 
"Honorverse", Crown of Slaves (2004)
        
                                        
                                         Letter https://founders.archives.gov/documents/Jefferson/98-01-02-1712 to William Roscoe (27 December 1820) 
1820s
                                    
“Genius is an exaggeration of dimension. So is elephantiasis. Both may be only a disease.”
Source: The Fountainhead
https://www.goodreads.com/author/quotes/6422617.Liam_Payne
As quoted by George H. W. Bush in remarks while presenting National Medals of Science and Technology http://bushlibrary.tamu.edu/research/papers/1990/90111300.html (13 November 1990). This might be a paraphrase of statements from his introduction to "Science The Endless Frontier" (1945), rather than a direct quote. (see below)
“Be of one mind and one faith, that you may conquer your enemies and lead long and happy lives.”
As quoted in The Mongol Empire : Its Rise and Legacy (1940) by Michael Prawdin, p. 224
Speech at the University of Wisconsin, Madison (8 October 1952)
                                        
                                        Widely attributed, but  likely apocryphal. https://quoteinvestigator.com/2015/08/23/friend/ Researchers have searched for this quote unsuccessfully in Camus' extant works. 
Disputed
                                    
 
                            
                        
                        
                         
                            
                        
                        
                         
                            
                        
                        
                         
                            
                        
                        
                         
                            
                        
                        
                        