3. Identity of modes and relations.
All other things being but modes or relations ultimately terminated in substances,
the identity and diversity of each particular existence of them too will be by the same way determined: only as to
things whose existence is in succession, such as are the actions of finite beings, v.g. motion and thought, both
which consist in a continued train of succession, concerning their diversity there can be no question: because each
perishing the moment it begins, they cannot exist in different times, or in different places, as permanent beings
can at different times exist in distant places; and therefore no motion or thought, considered as at different times,
can be the same, each part thereof having a different beginning of existence.