'The best book I have read, since I wrote you, is Hume's "Essays, political and literary". It is indeed a most ingenious production - characterised by acuteness and originality, in all its parts. I have not room to tell you where I agree with its Author, and where I differ; nor how highly I admire his reasoning powers. What pity that he is a Deist! How much might his strong talents have accomplished in the cause of truth, when they did so much in that of error! It is indeed melancholy to behold so many men of talent, in our times all leaning to the same side - but I am much inclined to believe, that the reign of infidelity is past its height.'