1. In this entry, the Adam and Tannery volumes, Oeuvres De Descartes, (11 volumes) are cited. Such citations are abbreviated as AT, followed by the appropriate volume and page numbers. I have whenever possible used the Cottingham, Stoothoff, and Murdoch translation, The Philosophical Writings Of Descartes (3 volumes), abbreviated as CSM. Volume 3 includes Anthony Kenny as a translator. This has been abbreviated as CSMK, followed by the appropriate volume and page numbers. The AT and CSM/CSMK numbers are cited side by side, separated by a semicolon. Thus, the citation for the letter to Gibeuf is: AT III 474; CSMK III 201.