If there were only one type of charge in the universe, then

If there were only one type of charge in the universe, then $\text{∮}\mathrm{E}.\mathrm{ds}=\frac{\mathrm{q}}{{\mathrm{\epsilon }}_0}$  if charges of magnitude q were inside the surface.

$\text{∮}\mathrm{E}\cdot \mathrm{ds}=0$ if no charge is inside the surface.