"An Enquiry Concerning Human Understanding" is a book by David Hume created as a revision of an earlier work, Hume's "A Treatise of Human Nature". The argument of the Enquiry proceeds by a series of incremental steps, separated into chapters which logically succeed one another. After expounding his epistemology, Hume explains how to apply his principles to specific topics. This book has proven highly influential, both in the years that would immediately follow and today. Immanuel Kant points to it as the book which woke him from his self-described "dogmatic slumber."

A landmark of enlightenment though, HUme's An Enquiry Concerning Human understanding is accompanied here by two shorter works that shed light on it: A Letter from a Gentlemen to His Friend in Edinburgh, hume's response to those accusing him of atheism, of advocating extreme scepticism, and of undermining the foundations of morality; and his Abstract of A Treatise of HUman Nature, which anticipates discussions developed in the Enquiry. In his concise Introduction, Eric Steinberg explores the conditions that led to write the Enquiry and the work's important relationship to Book 1 of Hume's A Treatise of Human Nature.

Moral philosophy, or the science of human nature, may be treated after two different manners; each of which has its peculiar merit, and may contribute to the entertainment, instruction, and reformation of mankind. The one considers man chiefly as born for action; and as influenced in his measures by taste and sentiment; pursuing one object, and avoiding another, according to the value which these objects seem to possess, and according to the light in which they present themselves. As virtue, of all objects, is allowed to be the most valuable, this species of philosophers paint her in the most amiable colours; borrowing all helps from poetry and eloquence, and treating their subject in an easy and obvious manner, and such as is best fitted to please the imagination, and engage the affections. They select the most striking observations and instances from common life; place opposite characters in a proper contrast; and alluring us into the paths of virtue by the views of glory and happiness, direct our steps in these paths by the soundest precepts and most illustrious examples. They make us feel the difference between vice and virtue; they excite and regulate our sentiments; and so they can but bend our hearts to the love of probity and true honour, they think, that they have fully attained the end of all their labours.

Enquiry concerning the principles of morals / Hume, David, 1711-1776.

David Hume’s 1748 Enquiry Concerning Human Understanding is a modern philosophical classic that helped reshape epistemology – the philosophy of knowledge. It is also a classic of the critical thinking skills of analysis and reasoning. Analysis is all about understanding how arguments work and fit together. Having strong analytical skills helps to break down arguments, pull out the evidence on which they rely, and understand the kinds of implicit assumptions and reasons on which they work. Reasoning, meanwhile, means building and presenting arguments, forming well-structured, evidenced, and organised cases for a particular point of view. Hume applied his analytical skills to arguments about how humans know and understand the world, and how our minds work. At base, he was trying to analyse human reason itself – to show the workings and limitations of the human mind, and show the origins of our beliefs. Hume went on to apply his reasoning skills, creating an enduring argument about the nature of human knowledge. The result was one of the most striking and famous works in the history of philosophy.