“Weak men are apt to be cruel.”
                                        
                                        http://books.google.com/books?id=K6lsEtMo1KMC&q=%22Weak+men+are+apt+to+be+cruel%22&pg=PA128#v=onepage 
Political, Moral, and Miscellaneous Reflections (1750), Moral Thoughts and Reflections