  In the philosophy of Crescas, two infinites are not automatically the same. There are differences between various infinite things. We know two very different categories of infinite: the infinite that is limitless without qualification, and the infinite that is limitless in one entire dimension but limited in other dimensions. For example, we can imagine a line that is infinite in both directions (the first category of infinite) and a line that is infinite in only one direction, i.e. a ray (the second category of infinite). The differences between the two categories are of course more apparent (and more complex) in the case of spatial planes and volumes. Crescas accepts the existence of the second category and draws the conclusion that in such cases we can add something to an infinite. If we have two distinct infinite rays starting at the same point, and I add some dimension (A) to the finite end of one of them, the consequence of this act is that I have now two infinite rays that are different in their dimensions, for one is smaller (only infinite) and one bigger (infinite + A). The same is true regarding the question of an infinite that can include another infinite. If, for example, we posit two infinitely long rectangles before us, with one being 10-meters high and the other being 1-meter high, then in Crescas’s opinion the first one is ten times bigger than the second despite the fact that both squares are infinite in area.