4. No clear or distinct idea of substance in general.
Hence, when we talk or think of any particular sort of
corporeal substances, as horse, stone, etc., though the idea we have of either of them be but the complication or
collection of those several simple ideas of sensible qualities, which we used to find united in the thing called horse
or stone; yet, because we cannot conceive how they should subsist alone, nor one in another, we suppose them
existing in and supported by some common subject; which support we denote by the name substance, though it be
certain we have no clear or distinct idea of that thing we suppose a support.