I have now finished reading The Case Against Infinity, and really liked it! I think this paragraph summarises it well:
The infinite is therefore something that is complete, thus divisible, and yet limitless, therefore indivisible. Since being a divisible-yet-indivisible thing is a contradiction in terms, so too the traditional notion of the infinite is self-contradictory.
I have now finished reading The Case Against Infinity, and really liked it! I think this paragraph summarises it well: