It followed from the special theory of relativity that mass...
It followed from the special theory of relativity that mass and energy are both but different manifestations of the same thing.
![Albert Einstein Quote About Special, Different, Energy: It Followed From The Special...](http://qt.azureedge.net/resources/quotes-images-large/it-followed-from-the-special-theory-of-relativity-that-mass-and-energy-are-both-b-d7810aba02a7aba01f16a0520d574e50.jpg)
It followed from the special theory of relativity that mass and energy are both but different manifestations of the same thing.