Full Idea
One body cannot be in two places at the same time, ...for the place that a body fills being divided into two, the placed body will also be divided into two; the place and the body that fills that place are divided both together.
Gist of Idea
If you separate the two places of one thing, you will also separate the thing
Source
Thomas Hobbes (De Corpore (Elements, First Section) [1655], 2.08.08)
Book Reference
Hobbes,Thomas: 'Metaphysical Writings', ed/tr. Calkins,Mary Whiton [Open Court 1905], p.58
A Reaction
If every time you manipulated one body it affected both of them, you might say that one body was in two places, rather like a mirror image.
Related Idea
Idea 17249 If you separated two things in the same place, you would also separate the places [Hobbes]