If there were no matter in the universe, the law of gravitation would fall to the ground.


Gravitation and the Principle of Relativity, Nature, Volume 101, Number 2523, March 7, 1918 (p. 17)


If there were no matter in the universe, the law of gravitation would fall to the ground.

If there were no matter in the universe, the law of gravitation would fall to the ground.

If there were no matter in the universe, the law of gravitation would fall to the ground.

If there were no matter in the universe, the law of gravitation would fall to the ground.