(II.ix.

Coroll.) Wherefore the knowledge of the duration of our body is in God very inadequate, in so far as he is only regarded as constituting the nature of the human mind; that is (II.xi.

Coroll.), this knowledge is very inadequate to our mind.

Q.E.D.
PROP.XXXI.

We can only have a very inadequate knowledge of the duration of particular things external to ourselves.
Proof .-- Every particular thing, like the human body, must be conditioned by another particular thing to exist and operate in a fixed and definite relation; this other particular thing must likewise be conditioned by a third, and so on to infinity.