“The measure of a man's real character is what he would do if he knew he would never be found out.”
Thomas Babington Macaulay, 1st Baron Macaulay (1800–1859) British historian and Whig politician
citation needed <br class="br">The earliest quotations of this give it as anonymous or unknown author. https://books.google.com/books?id=hPIsAAAAYAAJ&pg=PA321&dq=%22what+he+would+do+if+he+knew+it+would+never+be+found+out%22&hl=en&sa=X&ved=0CBwQ6AEwAGoVChMIlvi0prz_xwIVTwaSCh0hVwX5#v=onepage&q=%22what%20he%20would%20do%20if%20he%20knew%20it%20would%20never%20be%20found%20out%22&f=false https://books.google.com/books?id=i2MPAQAAIAAJ&pg=PA16-IA71&dq=%22what+he+would+do+if+he+knew+it+would+never+be+found+out%22&hl=en&sa=X&ved=0CB0Q6AEwAGoVChMIkMmp8rz_xwIV1BGSCh25lAO0#v=onepage&q=%22what%20he%20would%20do%20if%20he%20knew%20it%20would%20never%20be%20found%20out%22&f=false <br class="br">Attributed