The quote at https://www.goodreads.com/quotes/2565... appears to be misattributed to Nietzsche, as it is in many internet sites, but appears that it should be properly attributed (in a 1935 conversation) to Rudyard Kipling, as reported by the man with whom he was speaking, Arthur Gordon, although it does have some passing resemblance to section 199 of Nietzsche's _Beyond Good and Evil_. You might want to amend the attribution, or at least note that the attribution is contested.
See http://www.kiplingjournal.com/textfil... and https://answers.yahoo.com/question/in... and http://www.stephenhicks.org/2014/03/2...