 Locke never did produce such a work, and we might well wonder if he himself ever considered the project a “failure”. There is no doubt that morality was of central importance to Locke, a fact we can discern from the Essay itself; there are two important features of the Essay that serve to enlighten us regarding the significance of this work in the development of Locke’s moral views. First of all, morality seems to have inspired Locke to write the Essay in the first place. In recounting his original inclination to embark on the project, he recalls a discussion with “five or six friends”, at which they discoursed “on a Subject very remote from this” (Locke 1700, 7). According to Locke, the discussion eventually hit a standstill, at which point it was agreed that in order to settle the issue at hand it would first be necessary to, as Locke puts it, “examine our own Abilities, and see, what Objects our Understandings were, or were not fitted to deal with” (Locke 1700, 7). This was, he explains, his first entrance into the problems that inspired the Essay itself. But, what is most interesting for our purposes is just what the remote subject was that first got Locke and his friends thinking about fundamental questions of epistemology. James Tyrell, one of those who attended that evening, is a source of enlightenment on this matter—he later recalled that the discussion concerned morality and revealed religion. But, Locke himself refers to the subjects they discussed that fateful evening as ‘very remote’ from the matters of the Essay. That may well be, but it is also true that Locke, in the Essay, identifies morality as a central feature of human intellectual and practical life, which brings us to the second important fact about Locke’s view of morality. Locke writes, in the Essay, that “Morality is the proper Science, and Business of Mankind in general” (Essay, 4.12.11; these number are, book, chapter and section, respectively, from Locke’s Essay). For a book aiming to set out the limits and extent of human knowledge, this comes as no small claim. We must, Locke writes, “know our own Strength” (Essay, 1.1.6) and turn our attention to those areas in which we can have certainty, i.e., “those [things] which concern our Conduct” (Essay, 1.1.6). The amount of attention given to the question of morality itself would seem to belie its primacy for Locke. The Essay is certainly not intended as a work of moral philosophy; it is a work of epistemology, laying the foundations for knowledge. However, a very big part of the programme involves identifying what true knowledge is and what it is we as humans can have knowledge about, and morality is accorded a distinctive and fairly exclusive status in Locke’s epistemology as one of “the Sciences capable of Demonstration” (Essay, 4.3.18). The only other area of inquiry accorded this status is mathematics; clearly, for Locke, morality represents a unique and defining aspect of what it means to be human. We have to conclude, then, that the Essay is strongly motivated by an interest in establishing the groundwork for moral reasoning. However, while morality clearly has a position of the highest regard in his epistemological system, his promise of a demonstrable moral science is never realized here, or in later works.