It will, perhaps, give us a little further light into the idea we have of infinity, and discover to us, that it is if we consider that number is not generally thought by us infinite, whereas duration and extension are apt to be so; which arises from hence, that in number we are at one end, as it were: for there being in number nothing than an unit, we there stop, and are at an end; but in addition, or increase of number, we can set no bounds: and so it is like a line,