Take care what you are about, for unless you base all this on religion, you are only making so many clever devils.
Arthur Wellesley, 1st Duke of Wellington, Philip Henry, Fifth Earl Stanhope, Notes of Conversation with the Duke of Wellington, 1831-1851 (1886). Talking about non-denominational education, often paraphrased as "Educate men without religion, and you make them but clever devils".