This is the boy he now calls "The Philosopher."

Nine is what fourth-graders are. You don't expect them to be wise; they're still boys. When the two started talking, there was no hint of what was about to happen, except for the slightly odd introduction. His girlfriend said he "is interested in cosmology." "Really?" Zia thought, "cosmology?" So he leaned in and asked — just to be a badass — "What do you think about dark matter? Any ideas?"

Wait! I Need To Film This

The boy looked up, started to answer, and almost immediately Zia thought, "Wait!" Zia Hassan is a Washington, D.C.-based musician, blogger, teacher-in-training and video cameraman and he's learned to act on instinct, and his instincts were telling him, "I need to film this." He said to the boy, "Uh, can I film this? Is that all right with you?"

The boy didn't mind. And here, a million-and-a-half views later, is what the boy told him about the universe. I don't know the right words to describe what I feel watching this. Quiet surprise? Joy? Mystery? You should just look for yourself ...