As you two discuss with each other the things that matter most, you'll find that you're quite different at those levels. You may begin to see your friend as somehow superficial, or at least not as philosophical as you'd like them to be, as your expansive theories keep running up against their cool logic. To you, logic isn't always the best way to approach life; the universe doesn't fit into neat little boxes.
You may be more interested in exploring its complexities than in coming up with pat answers. Whatever your outlook, you and your buddy will both find it hard to communicate about your values and beliefs, because that easy, smooth link just isn't there between you. Learn what you can from their logical perspective; but don't get your knickers in a twist if you don't always agree.