I’m listening to a Chuck Missler Genesis commentary. He’s talking a lot of science, and discussed in brief the fact that although we perceive three dimensions (four if you count time), we actually live in a ten dimensional universe. He mentioned that on the web, you can find animations of a 4D cube projected into 3D. It’s quite an interesting concept, and quite difficult to visualize, even with it in front of your face. One I found, that can be viewed with or without 3D glasses, is here. Scroll down to see the directions on how to view it.