“Thy friendship oft has made my heart to ache: do be my enemy for friendship's sake.”
        “The friendships of the world are oft
Confederacies in vice, or leagues of pleasure;
Ours has severest virtue for its basis,
And such a friendship ends not but with life.”
    
    
    
            Act III, scene i. 
Cato, A Tragedy (1713)
        
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Joseph Addison 226
politician, writer and playwright 1672–1719Related quotes
“Sell not the friendship of the Lord for the friendship of the world and its possessions.”
Source: The Sayings and Teachings of the Great Mystics of Islam (2004), p. 29
                                        
                                        That is the key to our whole action and to our every motive. 
Speech to the Peace Society (31 October 1935), quoted in This Torch of Freedom (1935), pp. 336-337. 
1935
                                    
                                        
                                        Gautama Buddha, Cakkavatti Sutta, Patika Vagga, Digha Nikaya 
Unclassified
                                    
“Friendship often ends in love; but love in friendship—never.”
                                        
                                        Vol. II; LXXXIII 
Lacon
                                    
“Friendship often ends in love, but love in friendship - never.”
                                        
                                        Original: Un esempio di vita? Nel lavoro, nell'amicizia, nell'amore, nel piacere e nel dolore: sii sempre, incondizionatamente e semplicemente te stesso. 
Source: prevale.net
                                    
                                        
                                        Source: Simone Weil : An Anthology (1986), Love (1947), p. 274 
Context: To wish to escape from solitude is cowardice. Friendship is not to be sought, not to be dreamed, not to be desired; it is to be exercised (it is a virtue).