In 1767 , Heathcote published an anonymous letter to Horace Walpole on the dispute between David Hume and Jean-Jacques Rousseau , who was attributed to Walpole himself .
In 1767 , Heathcote published an anonymous letter to Horace Walpole on the dispute between David Hume and Jean-Jacques Rousseau , which was attributed to Walpole himself .