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                                    Idem velle atque idem nolle, ea demum firma amicitia est.
                                
                            
                                        
                                        As quoted by Sallust (86 BC – c. 35 BC) in Catiline's War, Book XX, pt. 4 (trans. J. C. Rolfe). 
Variant translations: 
To like and dislike the same things, that is indeed true friendship. 
To like the same things and to dislike the same things, only this is a strong friendship.
                                    
 
        
     
                             
                             
                             
                             
                             
                             
                            