Mathematician Georg Cantor (1845-1918) was evidently a finite human, yet was able to show that there are different sizes of infinity. For example, he showed that the infinite set of real numbers is larger than the infinite set of natural numbers, but the infinite set of real numbers is smaller than the infinite power set of real numbers.
Cantor was also able to grasp (and show) that the infinite set of real points on a straight line between 0 and 1 is the same size as the infinite set of real points on the infinite lines contained on a plane between 0,0 and 1,1, or, for that matter, the infinite set of real points on all of the infinite planes within a cube (0,0,0 to 1,1,1).
That is only definitions of infinity. What if there are an infinite number of infinities?