Henceforth space by itself, and time by itself, are doomed to fade away into mere shadows, and only a kind of union of the two will preserve an independent reality.
Hendrik Antoon Lorentz, Albert Einstein, Hermann Minkowski, Hermann Weyl, Arnold Sommerfeld (1952). “The Principle of Relativity: A Collection of Original Memoirs on the Special and General Theory of Relativity”, p.75, Courier Corporation
