In contrast to the positive Scottish reception of Pennant’s Tours, the 1775 publication of Dr Johnson’s Journey to the Western Islands caused a furore north of the border. This chapter develops two claims that have been largely underplayed in the copious scholarship on Johnson. The first is that the publishing success of Pennant’s tours were a major (albeit unacknowledged) inspiration for Johnson and Boswell, providing an important intertext for Johnson’s Journey. Secondly, it supports the view that Johnson was specifically motivated to discredit the authenticity of Ossian and the claims of Gaelic culture, as well as of his distaste for the Scottish enlightenment’s appropriation of Macpherson’s ‘translations’. Drawing on contemporary Gaelic scholarship, the chapter examines the strengths and weaknesses of Johnson’s grasp of Gaelic culture, superstitions, and the Ossian controversy, as well as his ambivalent views on emigration, improvement, missionary activity, and the transformation of Highland society.