The universe is the total of that which exists—not merely the earth or the
stars or the galaxies, but everything. Obviously then there can be no such
thing as the “cause” of the universe . . .
Is the universe then unlimited in size? No. Everything which exists is
finite, including the universe. What then, you ask, is outside the universe, if
it is finite? This question is invalid. The phrase “outside the universe” has
no referent. The universe is everything. “Outside the universe” stands for
“that which is where everything isn’t.” There is no such place. There isn’t
even nothing “out there”: there is no “out there.”