Leibniz expressed this point in a logical way, saying that of every true proposition, the predicate is contained within the subject. What this amounts to is the extreme view that every truth is a necessary truth – a conclusion Leibniz does not shy away from but embraces, claiming that everything happens the way it does because it must, and it must because God has chosen to make actual the best of all possible worlds. Things could only have been different if God had chosen to actualise a different possible world.

