I have found little that is "good" about human beings on the whole. In my experience most of them are trash, no matter whether they publicly subscribe to this or that ethical doctrine or to none at all. That is something that you cannot say aloud, or perhaps even think.
Sigmund Freud (1856–1939), Austrian psychiatrist. Letter, October 9, 1918. "Psycho-Analysis and Faith: The Letters of Sigmund Freud and Oscar Pfister," no. 59, The International Psycho-Analytical Library (1963).