One could say: "The boundary condition of the universe is that it has no boundary." The universe would be completely self-contained and not affected by anything outside itself. It would neither be created nor destroyed. It would just BE.
The boundary condition of the universe is that it has no boundary.
There should be no boundaries to human endeavor. However bad life may seem, there is always hope.
There ought to be something very special about the boundary conditions of the universe and what can be more special than that there is no boundary?