You know, you can fit an infinite amount of cubes in a teseract as you can fit an infinite amount of squares in a cube; a square has no 3rd dimension, no depth; a cube has no 4th spatial dimension, no [—] (I do not know if there exists a word for the idea I am trying to relay). Now, even though there exists no infinite amount in the universe, mathematically speaking, infinite 3-d matter can exist in 4-d, 5-d, 6-d, etc. space.