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On his family
                                    
“The purpose of life is to contribute in some way to making things better.”
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Robert F. Kennedy 72
American politician and brother of John F. Kennedy 1925–1968Related quotes
“Every way of classifying a thing is but a way of handling it for some particular purpose.”
1880s, The Sentiment of Rationality (1882)
                                        
                                        Epilogue (p. 687) 
The Dragon in the Sword (1986)
                                    
"BBC phỏng vấn bà Nguyễn Thị Bình" https://www.bbc.com/vietnamese/av/2009/03/090301_inv_nguyen_thi_binh_tc2 (1 March 2009)
Where Is God (2009, Thomas Nelson publishers)
                                        
                                        "The Myths by Which We Live", in The Rotarian, Vol. 107, No. 3 (September 1965), p. 55 
Variant: The purpose of life is not to be happy at all. It is to be useful, to be honorable. It is to be compassionate. It is to matter, to have it make some difference that you lived.