자연과학
Natural science rejects spiritual science as a valid science. Natural science demands that the means of knowledge (the senses, objective measure instruments and logic) are objective. That is: In principle all people should be able to use the same means of knowledge. But intuition is not an objective means of knowledge in this sense. It is dependent on the single subjective individual (in this case Martinus). Not all people can use this means of knowledge, because not all people possess this intuition. Therefore, spiritual science is not a valid science, natural science says. For that reason, this article will not talk about "the spiritual science of Martinus", but about "the teachings of Martinus" (which is based on his intuitive experiences).