"A sick Person has usually Confidence in his Physician, credits what is told him, and uses what is prescribed; but an immoral Man seldom believes that his Mind is sick, slights his Doctor, and applies not the proper Remedies."
An Index to Mankind: or Maxims Selected from the Wits of all Nations 
An Index to Mankind: or Maxims Selected from the Wits of all Nations (Dublin: James Hoey, 1765). &lt;<a href="http://books.google.com/books?id=5JUDAAAAQAAJ">Link to Google Books</a>&gt;