""A Letter To A Deist"" is a book written by John Balguy in 1726. The book is a letter addressed to a Deist, a person who believes in the existence of God but rejects organized religion and supernatural revelation. The purpose of the letter is to argue that moral virtue is beautiful and excellent, and that it is supported and improved by the Christian revelation. Balguy argues that moral virtue is not only good in itself, but it also leads to happiness...