“ Good feeling helps society to make liars of most of us,—not absolute liars, but such careless handlers of truth that its sharp corners get terribly rounded. ”
 Oliver Wendell Holmes Sr., The Autocrat of the Breakfast-Table (1858). copy citation

Context

“but if I did partake of a man’s salt, with such additions as that article of food requires to make it palatable, I could never abuse him, and if I had to speak of him, I suppose I should hang my set of jingling epithets round him like a string of sleigh-bells. Good feeling helps society to make liars of most of us,—not absolute liars, but such careless handlers of truth that its sharp corners get terribly rounded. I love truth as chiefest among the virtues; I trust it runs in my blood; but I would never be a critic, because I know I could not always tell it. I might write a criticism of a book that happened to please me;” source