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