The parts you are quoting are just the opinions of the author of that website, not quotes from Einstein himself. And all this is irrelevant to what we've debating on this thread--let's not take a thread that was split for being off-topic and make it off-topic again, OK? The only section of that page that was relevant to our debate was the one I quoted, where Einstein gave a definition of Lorentz covariance.Aether said:Actually, I too rather prefer to suppose that "matter is spherically spatially extended, and thus to reject the concept of the particle" in a classical sense at least. Nevertheless, "the Logic of Relativity is founded on, and completely consistent with, an Absolute Space. (Contrary to current opinions)". I am so glad to see that I do not have to justify this position at all, as it has been Einstein's own position all along.