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

A second one must come with regard to mysticism. Just as on the one hand he turns to natural science in order to pursue natural science and the observation of nature in the right sense, and comes to realize why this observation of nature has limits, so he turns on the other hand to mysticism, not to make biased judgements about it but to gain living experience from it and to be able to ask himself in a truly living way: Is it perhaps possible gain through mysticism what cannot be gained through natural science—a sphere that lies beyond the limits of sensory observation? Can we enter wholly into our own selves—which is the way of mysticism—and come closer to the riddles of non-physical existence?