"Then you mean to say there is no such thing as the smallest particle of matter?" asked the Doctor. "You can put it that way if you like," the Chemist replied. "In other words, what I believe is that things can be infinitely small just as well as they can be infinitely large. Astronomers tell us of the immensity of space. I have tried to imagine space as finite. It is impossible. How can you conceive the edge of space? Something must be beyond-something or nothing, and even that would be more space, wouldn't it?"