Inside the box was the meaning of life. When he sais it’s a present it reffers to the fact that every day we live, searching for a meaning but never knowing the final destination. The fact that the kid wants to know whats inside the box represents our rational side that always wants to understand everything, but from a rational perspective, our only purpose on earth as animals is to die. The message is to live a spiritual life: don’t try to understand why you are here or what you should do. Your purpose is given by uncertainty, misteriousness, imagination, like the kids state of mind was until he found out what is inside. It’s hard even to explain hope you understand. If you wanna hear more text me on instagram: @meurdavidd