V. Can a method of gaining insight into spheres beyond the sense-perceptible world be given a scientific basis?

The later lectures will be about the different things we feel with regard to the human soul, with regard to the spirits and powers that are behind the natural world, behind our social, religious and historical life. Today I would still like to answer the question as to why this science of the spirit, which according to what has been said works with the kind of proofs that demand the best possible training in modern science, proofs that are entirely on the pattern of modern science—why is it so difficult for this science of the spirit to find a home in the minds of modern people.