Full Idea
If objects are doubted because the same object appears differently at different times and circumstances, in order that this judgement shall have weight it must be assumed that the object under question is the same in its different presentations.
Gist of Idea
If objects are doubted because their appearances change, that presupposes one object
Source
Stephen S. Colvin (The Common-Sense View of Reality [1902], p.145)
Book Reference
-: 'Philosophical Review' [-], p.145
A Reaction
[compressed] Scepticism could eat into the underlying object as well. Is the underlying object a 'substrate'? If so, what's that? Is the object just a bundle of a properties? If so, there is no underlying object.