Premise: Commissioned by Charles II, the paintings were all the work of one man, Dutch artist Jacob de Wit.

Hypothesis: Jacob de Wit's employment continued after the reign of Charles II ended.
Answer: it is not possible to tell

Premise: Metaphysics was a subject with which he wasn't yet fully prepared to cope.

Hypothesis: He was not prepared to cope with metaphysics.
Answer: it is not possible to tell

Premise: and things will live on this planet but humans may not be able to anymore

Hypothesis: Humans will be able to live on the planet forever.
Answer: no

Premise: right well see that's one

Hypothesis: That is the only one.
Answer: it is not possible to tell