The first is on the Quakers.  The second is on the Quakers.  The third and fourth letters are on the Quakers.  The fourteenth compares Descartes to Newton, much to the latter's advantage.  The fifteenth letter includes the fa
The first is on the Quakers.  The second is on the Quakers.  The third and fourth letters are on the Quakers.  The fourteenth compares Descartes to Newton, much to the latter's advantage.  The fifteenth letter includes the famous anecdote about Newton and the falling fruit.  FTP name this 1734 work in praise of British liberalism by Voltaire.
The first is on the Quakers.  The second is on the Quakers.  
Letters on the English (or Lettres philosophiques)