 Others take criticisms launched at Locke’s theory of personal identity, including the criticism that the self (or persisting self) is a fiction, and appear to embrace such  consequences.[13]  This can be seen rather readily in David Hume’s Treatise of Human Nature (1738). In the Treatise, Hume asserts that it is not clear how we can even have an idea of the self. This is because most take selves to be persisting entities, and all of our ideas come from corresponding impressions. But since our impressions constantly change, there is no one impression that can give rise to the idea we call “self”. Of this Hume says,