There are a lot of articles on the net that mention Nikola Tesla's ether (aether) theories, such as this quote:
Only the existence of a field of force can account for the motions of the bodies as observed, and its assumption dispenses with space curvature. All literature on this subject is futile and destined to oblivion. So are all attempts to explain the workings of the universe without recognizing the existence of the ether and the indispensable function it plays in the phenomena. My second discovery was of a physical truth of the greatest importance. As I have searched the entire scientific records in more than a half dozen languages for a long time without finding the least anticipation, I consider myself the original discoverer of this truth, which can be expressed by the statement: There is no energy in matter other than that received from the environment. (source).
Was there any truth to this idea of his?
Why was it rejected by the scientific community?
Did he actually ever claim it even?
The only places I can find such mentions seem to be pseudo-scientific sites.