Most of everything is nothing.
The nucleus of an atom is very small. The electrons whizz round it very fast, but not near it. It is like the electrons are wasps buzzing round the walls of Piccadilly Station and the nucleus is a plum in the middle. I.e. most of the atom is space. Therefore most of everything is nothing! The Empire State Building, if compacted completely, would fit on the head of a pin (but still weigh the same).