Hume, David (1711-1776)

An Enquiry Concerning Human Understanding

London

A. Millar

1748, 1777

"And by this means, we may, perhaps, attain a new microscope or species of optics, by which, in the moral sciences, the most minute, and most simple ideas may be so enlarged as to fall readily under our apprehension, and be equally known with the grossest and most sensible ideas, that can be the object of our enquiry."

It seems a proposition, which will not admit of much dispute, that all our ideas are nothing but copies of our impressions, or, in other words, that it is impossible for us to think of anything, which we have not antecedently felt, either by our external or internal senses. I have endeavoured[1] to explain and prove this proposition, and have expressed my hopes, that, by a proper application of it, men may reach a greater clearness and precision in philosophical reasonings, than what they have hitherto been able to attain. Complex ideas, may, perhaps, be well known by definition, which is nothing but an enumeration of those parts or simple ideas, that compose them. But when we have pushed up definitions to the most simple ideas, and find still more ambiguity and obscurity; what resource are we then possessed of? By what invention can we throw light upon these ideas, and render them altogether precise and determinate to our intellectual view? Produce the impressions or original sentiments, from which the ideas are copied. These impressions are all strong and sensible. They admit not of ambiguity. They are not only placed in a full light themselves, but may throw light on their correspondent ideas, which lie in obscurity. And by this means, we may, perhaps, attain a new microscope or species of optics, by which, in the moral sciences, the most minute, and most simple ideas may be so enlarged as to fall readily under our apprehension, and be equally known with the grossest and most sensible ideas, that can be the object of our enquiry.
(p. 62)

Optics::Microscope

Reading

Working from Nidditch's census, and also confirming entries in the ESTC (1748, 1750, 1751, 1756, 1758, 1760, 1764, 1767, 1768, 1770, 1772, 1777).

First published as Philosophical Essays Concerning Human Understanding (London: Printed for A Millar, 1748). <Link to ECCO><Link to ECCO-TCP><Link to 1748 edition in Google Books> "Second edition" in 1750, "third edition" in 1756. First titled An Enquiry Concerning Human Understanding in 1758.

In ECCO-TCP, see also Essays and Treatises: on Several Subjects. By David Hume, Esq, 4 vols. (London: Printed for A. Millar; and A. Kincaid and A. Donaldson, at Edinburgh, 1760). <Link to vol. III>

Text from David Hume, Enquiries Concerning Human Understanding and Concerning the Principles of Morals. 3rd edition. Ed. L. A. Selby-Bigge; P. H. Nidditch (Oxford: Oxford University Press, 1975). Note, Nidditch reproduces the the second volume of the posthumous edition of 1777, which he has collated with the preceding 1772 edition.

03/05/2011