10. Their parts inseparable.
Expansion and duration have this further agreement, that, though they are both
considered by us as having parts, yet their parts are not separable one from another, no not even in thought:
though the parts of bodies from whence we take our measure of the one; and the parts of motion, or rather the
succession of ideas in our minds, from whence we take the measure of the other, may be interrupted and
separated; as the one is often by rest, and the other is by sleep, which we call rest too.
