I would have to go into many things were I to explain in detail what I have put forward simply as facts. It is time such things were discussed, for clear ideas corresponding to facts are needed. Otherwise it is not possible to refute such brilliant nonsense as, for example, the theory of relativity which has made Einstein a figure of renown.
The theory of relativity seems so self-evident: for example, when a cannon is fired at a distance the sound is heard after a certain interval; if one moves nearer to the cannon the sound is heard sooner. Now, according to the theory of relativity if one moved with the speed of sound one would not hear it for one would go with it. If one went even faster than the sound, then one would hear something which is fired later, before one would hear what was fired earlier.
This idea is generally accepted today but it has no relation whatever to reality. To go as fast as sound would mean to be sound and to hear none. These quite distorted ideas exist today as the theory of relativity and enjoy the greatest respect.
Source: Rudolf Steiner – GA 176 – The Karma of Materialism: Lecture 2 – Berlin, August 7, 1917