"The Fool-Killer" 
The Voice of the City (1908) 
Context: I know you. I have heard of you all my life. I know now what a scourge you have been to your country. Instead of killing fools you have been murdering the youth and genius that are necessary to make a people live and grow great. You are a fool yourself, Holmes; you began killing off the brightest and best of our countrymen three generations ago, when the old and obsolete standards of society and honor and orthodoxy were narrow and bigoted. You proved that when you put your murderous mark upon my friend Kerner — the wisest chap I ever knew in my life.
                                    
O. Henry: Quotes about people
O. Henry was American short story writer. Explore interesting quotes on people.“We can't buy one minute of time with cash; if we could, rich people would live longer.”
Source: Selected Stories
                                        
                                        Preface 
The Four Million (1906)
                                    
                                        
                                        "A Municipal Report" 
Strictly Business (1910)