Thomas Reid's Inquiry has long been recognized as a classic philosophical text. Since its first publication in 1764, there have followed no less than forty editions. The proliferation of secondary literature further indicates that Reid's work is flourishing as never before. Yet Reid scholars have been acutely aware of proceeding without the full textual evidence. There exist thousands of unpublished manuscript pages in Reid's hand, many of which relate directly to the composition of Inquiry. Furthermore, no account has been taken of the successive alterations made to the...