Full Idea
The myth of physical objects is epistemologically superior to most in that it has proved more efficacious than other myths as a device for working a manageable structure into the flux of experience.
Clarification
'Epistemologically superior' means 'better at explaining how our knowledge works'. 'Efficacious' means 'effective'.
Gist of Idea
If physical objects are a myth, they are useful for making sense of experience
Source
Willard Quine (Two Dogmas of Empiricism [1953], p.44)
Book Reference
Quine,Willard: 'From a Logical Point of View' [Harper and Row 1963], p.44